treatments-xml/data/C5/58/87/C55887A817753B16CDB6FDFD6170604E.xml

<document id="C98FD4F4C046A9C813046A1573B0508F" ID-CLB-Dataset="32357" ID-DOI="10.11646/zootaxa.4310.1.1" ID-GBIF-Dataset="fa2c148d-adf5-4ee3-9eee-d6f18b85c44d" ID-ISSN="1175-5326" ID-Zenodo-Dep="846227" ID-ZooBank="51059A1A-74EE-4DFC-90DD-B9130CE267CB" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.tables_requiresApprovalFor="existingObjects,plazi" IM.taxonomicNames_approvedBy="felipe" checkinTime="1503303538885" checkinUser="plazi" docAuthor="João Pedro Fontenelle &amp; Marcelo R. De Carvalho" docDate="2017" docId="C55887A817753B16CDB6FDFD6170604E" docLanguage="en" docName="zootaxa.4310.1.1.pdf.imf" docOrigin="Zootaxa 4310 (1)" docStyle="DocumentStyle:5EBBA59367AD13919D70D935FA04F6A3.14:Zootaxa.2013-.monograph" docStyleId="5EBBA59367AD13919D70D935FA04F6A3" docStyleName="Zootaxa.2013-.monograph" docStyleVersion="14" docTitle="Potamotrygon amazona Fontenelle &amp; Carvalho, 2017, sp. nov." docType="treatment" docVersion="9" lastPageNumber="43" masterDocId="3961FFD017553B3CCD21FFBA631A6313" masterDocTitle="Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography" masterLastPageNumber="63" masterPageNumber="1" pageNumber="33" updateTime="1698466995499" updateUser="ExternalLinkService">
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<mods:title id="266C6E757FFBDE75A75ED9D65C9B9903">Systematic revision of the Potamotrygon scobina Garman, 1913 species-complex (Chondrichthyes: Myliobatiformes: Potamotrygonidae), with the description of three new freshwater stingray species from Brazil and comments on their distribution and biogeography</mods:title>
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<mods:namePart id="15018AD7F044CF7BC12DA65985ECCD3C">João Pedro Fontenelle</mods:namePart>
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<mods:namePart id="23EB8651800A00B0F40EB175F9FD53C0">Marcelo R. De Carvalho</mods:namePart>
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<mods:date id="47ED930537CB68557DC44F5894F4197F">2017</mods:date>
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<treatment id="C55887A817753B16CDB6FDFD6170604E" ID-DOI="http://doi.org/10.5281/zenodo.5618460" ID-GBIF-Taxon="132786202" ID-Zenodo-Dep="5618460" LSID="urn:lsid:plazi:treatment:C55887A817753B16CDB6FDFD6170604E" httpUri="http://treatment.plazi.org/id/C55887A817753B16CDB6FDFD6170604E" lastPageId="42" lastPageNumber="43" pageId="32" pageNumber="33">
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<paragraph id="4D4E36BE17753B1CCDB6FDFD61386171" blockId="32.[151,546,583,643]" box="[151,546,583,610]" pageId="32" pageNumber="33">
<heading id="160681D217753B1CCDB6FDFD61386171" bold="true" box="[151,546,583,610]" fontSize="11" level="1" pageId="32" pageNumber="33" reason="1">
<emphasis id="7F85EAAC17753B1CCDB6FDFD61386171" bold="true" box="[151,546,583,610]" pageId="32" pageNumber="33">
<taxonomicName id="8AF14D3D17753B1CCDB6FDFD62AC6172" ID-CoL="4M4QF" box="[151,438,583,609]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CCDB6FDFD62AC6172" bold="true" box="[151,438,583,609]" italics="true" pageId="32" pageNumber="33">Potamotrygon amazona</emphasis>
</taxonomicName>
, 
<taxonomicNameLabel id="64B657D717753B1CCCE5FDF261386171" box="[452,546,584,610]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
</heading>
</paragraph>
<paragraph id="4D4E36BE17753B1CCDB6FDD061106190" blockId="32.[151,546,583,643]" box="[151,522,618,643]" pageId="32" pageNumber="33">
(
<figureCitation id="D5CA2A3B17753B1CCDBEFDD0623D6190" box="[159,295,618,643]" captionStart-0="FIGURE 24" captionStart-1="FIGURE 25" captionStart-2="FIGURE 26" captionStart-3="FIGURE 27" captionStart-4="FIGURE 28" captionStart-5="FIGURE 29" captionStart-6="FIGURE 30" captionStart-7="FIGURE 31" captionStart-8="FIGURE 32" captionStartId-0="33.[151,250,966,988]" captionStartId-1="34.[151,250,1017,1039]" captionStartId-2="36.[151,250,1506,1528]" captionStartId-3="37.[151,250,1106,1128]" captionStartId-4="37.[151,250,1889,1911]" captionStartId-5="38.[151,250,1885,1907]" captionStartId-6="39.[151,250,1263,1285]" captionStartId-7="40.[151,250,1833,1855]" captionStartId-8="41.[151,250,1612,1634]" captionTargetBox-0="[164,1420,204,929]" captionTargetBox-1="[161,1425,206,983]" captionTargetBox-2="[150,1428,194,1470]" captionTargetBox-3="[150,1436,193,1085]" captionTargetBox-4="[160,1422,1217,1848]" captionTargetBox-5="[228,1339,193,1858]" captionTargetBox-6="[160,1428,198,1232]" captionTargetBox-7="[151,1435,539,1811]" captionTargetBox-8="[271,1275,199,1561]" captionTargetId-0="figure@33.[152,1435,193,944]" captionTargetId-1="figure@34.[150,1437,194,996]" captionTargetId-2="figure@36.[150,1436,194,1485]" captionTargetId-3="figure@37.[150,1436,193,1085]" captionTargetId-4="figure@37.[150,1436,1209,1862]" captionTargetId-5="figure@38.[228,1339,193,1858]" captionTargetId-6="figure@39.[150,1436,193,1242]" captionTargetId-7="figure@40.[151,1435,539,1811]" captionTargetId-8="figure@41.[271,1279,193,1582]" captionTargetPageId-0="33" captionTargetPageId-1="34" captionTargetPageId-2="36" captionTargetPageId-3="37" captionTargetPageId-4="37" captionTargetPageId-5="38" captionTargetPageId-6="39" captionTargetPageId-7="40" captionTargetPageId-8="41" captionText-0="FIGURE 24. Holotype of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). A. Dorsal view. B. Ventral view." captionText-1="FIGURE 25. Paratype of Potamotrygon amazona, sp. nov. (MZUSP 117346, adult female, 405 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). A. Dorsal view. B. Ventral view." captionText-2="FIGURE 26. Morphological details of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Dorsal head and snout region. B. Mouth and nostrils. C. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. D. Ventral view of pelvic fins, claspers and cloaca. E. Dorsal clasper." captionText-3="FIGURE 27. Teeth of Potamotrygon amazona, sp. nov. (MZUSP 117345) A, B. Upper jaw. C, D. Lower jaw. Scale bar = 2 mm." captionText-4="FIGURE 28. Color variation in Potamotrygon amazona, sp. nov. A. MZUSP 117347 (adult male, 560 mm DW). B. MZUSP 117345 (adult male, 584 mm DW)." captionText-5="FIGURE 29. Scanning Electron Microscope (SEM) images of dermal denticles of Potamotrygon amazona, sp. nov. (based on MZUSP 117345) A. Dorsal rostral region. B. Dorsal rostral region in detail. C. Dorsal head region. D. Dorsal head region in detail. E. Dorsal caudal region. F. Dorsal caudal region in detail. Abbreviations: Bp, basal plate; Br, basal ridge; Cr, coronal ridge; Co, corona; Cd, coronal dichotomy; Cp, coronal plate." captionText-6="FIGURE 30. Ventral lateral-line canals of Potamotrygon amazona, sp. nov. (based on MZUSP 117345) A. Overall arrangement; B. Anterior portion in detail. Abbreviations: ACH, angular component of hyomandibular canal; AJL, anterior jugular loop; AST, anterior subpleural tubules; CON, orbitonasal component of supraorbital canal; HYC, hyomandibular canal; IOC, infraorbital canal; IOL, infraorbital loop; JCH, jugular component of hyomandibular canal; JUG, jugular canal; NAS, nasal canal; NIL, nasointerior loop; PJL, posterior jugular loop; PNC, prenasal component of nasal canal; PNL, prenasal loop; PST, posterior subpleural tubules; SOC, supraorbital canal; SOL, suborbital loop; SOI, suborbital component of infraorbital canal; SPC, subpleural component of hyomandibular canal; SPL, subpleural loop; SRC, subrostral component of supraorbital canal." captionText-7="FIGURE 31. Skeletal anatomy (from radiographs) of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Ventral view of anterior disc and jaws. B. Angular cartilages, left side. C. Pectoral girdle, ventral view. D. Tail thorns and clasper skeleton. E. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium." captionText-8="FIGURE 32. Illustration of the clasper skeleton of Potamotrygon amazona, sp. nov. (MZUSP 117347, adult male, 560 mm DW). A. Dorsal view. B. Ventral view. Abbreviations: AT, acessory terminal; AX, axial cartilage; BE, beta cartilage; B 1, first basal segment; B 2, second basal segment; DM, dorsal marginal; DT 2, dorsal terminal 2; VM, ventral marginal; VT, ventral terminal." httpUri-0="https://zenodo.org/record/892799/files/figure.png" httpUri-1="https://zenodo.org/record/892801/files/figure.png" httpUri-2="https://zenodo.org/record/892803/files/figure.png" httpUri-3="https://zenodo.org/record/892805/files/figure.png" httpUri-4="https://zenodo.org/record/892807/files/figure.png" httpUri-5="https://zenodo.org/record/892809/files/figure.png" httpUri-6="https://zenodo.org/record/892811/files/figure.png" httpUri-7="https://zenodo.org/record/892813/files/figure.png" httpUri-8="https://zenodo.org/record/892815/files/figure.png" pageId="32" pageNumber="33">Figs. 24–32</figureCitation>
, 
<figureCitation id="D5CA2A3B17753B1CCC13FDD1624B6190" box="[306,337,619,643]" captionStart="FIGURE 42" captionStartId="52.[151,250,954,976]" captionTargetBox="[151,1435,193,933]" captionTargetId="figure@52.[151,1435,193,933]" captionTargetPageId="52" captionText="FIGURE 42. Angular cartilages of species of the P. scobina complex. A. Holotype of Potamotrygon scobina (MCZ- 602 s, juvenile male, 238 mm DW). B. Potamotrygon scobina (MZUSP 104247, adult male, 503 mm DW). C. Potamotrygon adamastor, sp. nov. (MZUSP 104662, adult female, 545 mm DW). D. Potamotrygon limai (MZUSP 104068, juvenile male, 219 mm DW). E. Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). F. Potamotrygon garmani, sp. nov. (UNT 2174, adult? male, 341 mm DW). Abbreviations: AAC, anterior angular cartilage; LAC, lateral angular cartilage; PAC, posterior angular cartilage." httpUri="https://zenodo.org/record/892835/files/figure.png" pageId="32" pageNumber="33">42</figureCitation>
, 
<figureCitation id="D5CA2A3B17753B1CCC7CFDD162666190" box="[349,380,619,643]" captionStart="FIGURE 43" captionStartId="53.[151,250,1668,1690]" captionTargetBox="[151,1435,735,1647]" captionTargetId="figure@53.[151,1435,735,1647]" captionTargetPageId="53" captionText="FIGURE 43. Distribution of species of the Potamotrygon scobina complex. Red circle: Potamotrygon scobina; red star: type locality of Potamotrygon scobina; purple diamond: Potamotrygon limai; yellow pentagon: Potamotrygon adamastor, sp. nov.; blue square: Potamotrygon amazona, sp. nov.; green triangle: Potamotrygon garmani, sp. nov." httpUri="https://zenodo.org/record/892837/files/figure.png" pageId="32" pageNumber="33">43</figureCitation>
; 
<tableCitation id="0073030517753B1CCCA6FDD061186190" box="[391,514,618,643]" captionStart-0="TABLE 5" captionStart-1="TABLE 6" captionStartId-0="35.[151,238,157,180]" captionStartId-1="35.[151,238,1460,1483]" captionTargetBox-0="[159,1414,245,1387]" captionTargetBox-1="[159,1414,245,1387]" captionTargetPageId-0="35" captionText-0="TABLE 5. Morphometric data for P. amazona sp. nov. SD: standard deviation." captionText-1="TABLE 6. Meristic data for P. amazona sp. nov. SD: standard deviation. (*) Single female specimen." httpUri-0="http://table.plazi.org/id/198E663617763B1FCDB6FF2760C663A7" httpUri-1="http://table.plazi.org/id/198E663617763B1FCDB6FA0E67D666D8" pageId="32" pageNumber="33" tableUuid-0="198E663617763B1FCDB6FF2760C663A7" tableUuid-1="198E663617763B1FCDB6FA0E67D666D8">Tables 5–6</tableCitation>
)
</paragraph>
</subSubSection>
<subSubSection id="05EB653517753B1CCDB6FD0860906048" pageId="32" pageNumber="33" type="materials_examined">
<paragraph id="4D4E36BE17753B1CCDB6FD08621A6000" blockId="32.[151,1437,690,1975]" pageId="32" pageNumber="33">
<materialsCitation id="FD993CE317753B1CCDB6FD08621A6000" ID-GBIF-Occurrence="1586248269" collectingDate="2012-09" collectionCode="MZUSP" collectorName="F. Marques" country="Brazil" county="upper rio Amazonas Basin" latitude="-2.9235556" location="rio Jutai" longLatPrecision="1" longitude="-66.95211" municipality="Boca do Titica" pageId="32" pageNumber="33" specimenCode="MZUSP 117344" specimenCount="1" stateProvince="Amazonas" typeStatus="holotype">
<emphasis id="7F85EAAC17753B1CCDB6FD08621E61D8" bold="true" box="[151,260,690,715]" pageId="32" pageNumber="33">
<typeStatus id="924A881C17753B1CCDB6FD08621E61D8" box="[151,260,690,715]" pageId="32" pageNumber="33" type="holotype">Holotype</typeStatus>
</emphasis>
. 
<specimenCode id="1D579EC517753B1CCC35FD0962D461D8" box="[276,462,691,715]" collectionCode="MZUSP" country="Brazil" httpUri="http://grbio.org/cool/6yx0-3nm7" name="Museu de Zoologia da Universidade de Sao Paulo" pageId="32" pageNumber="33">MZUSP 117344</specimenCode>
(adult male, 
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DW), 
<location id="482E606517753B1CCE3BFD08606161D8" LSID="urn:lsid:plazi:treatment:C55887A817753B16CDB6FDFD6170604E:482E606517753B1CCE3BFD08606161D8" box="[794,891,690,715]" country="Brazil" county="upper rio Amazonas Basin" latitude="-2.9235556" longLatPrecision="1" longitude="-66.95211" municipality="Boca do Titica" name="rio Jutai" pageId="32" pageNumber="33" stateProvince="Amazonas">rio Jutaí</location>
, municipal district of 
<collectingMunicipality id="AD2AACC417753B1CC95BFD09663C61D8" box="[1146,1318,690,715]" pageId="32" pageNumber="33">Boca do Titica</collectingMunicipality>
, 
<collectingCounty id="A42F4E3217753B1CC815FD09624261FC" pageId="32" pageNumber="33">upper rio Amazonas Basin</collectingCounty>
, state of 
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, 
<collectingCountry id="35E6762E17753B1CCF65FD6C619161FC" box="[580,651,726,751]" name="Brazil" pageId="32" pageNumber="33">Brazil</collectingCountry>
, 
<geoCoordinate id="28C5507917753B1CCFB6FD6C603861FC" box="[663,802,726,751]" direction="south" orientation="latitude" pageId="32" pageNumber="33" precision="1" value="-2.9235556">2°55’24.8”S</geoCoordinate>
, 
<geoCoordinate id="28C5507917753B1CCE0EFD6C60CB61FC" box="[815,977,726,751]" direction="west" orientation="longitude" pageId="32" pageNumber="33" precision="1" value="-66.95211">66°57’07.6”W</geoCoordinate>
, 
<date id="394F107E17753B1CCEFCFD6C678261FC" box="[989,1176,726,751]" pageId="32" pageNumber="33" value="2012-09">
<collectingDate id="290BE99617753B1CCEFCFD6C678261FC" box="[989,1176,726,751]" pageId="32" pageNumber="33" value="2012-09">September 2012</collectingDate>
</date>
, coll. 
<collectorName id="E004536817753B1CC9FCFD6D664161FD" box="[1245,1371,727,750]" pageId="32" pageNumber="33">F. Marques</collectorName>
<emphasis id="7F85EAAC17753B1CC842FD6D668F61FD" box="[1379,1429,726,750]" italics="true" pageId="32" pageNumber="33">et al</emphasis>
. (
<figureCitation id="D5CA2A3B17753B1CCDBEFD4063EE6000" box="[159,244,762,787]" captionStart="FIGURE 24" captionStartId="33.[151,250,966,988]" captionTargetBox="[164,1420,204,929]" captionTargetId="figure@33.[152,1435,193,944]" captionTargetPageId="33" captionText="FIGURE 24. Holotype of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). A. Dorsal view. B. Ventral view." httpUri="https://zenodo.org/record/892799/files/figure.png" pageId="32" pageNumber="33">Fig. 24</figureCitation>
).
</materialsCitation>
</paragraph>
<paragraph id="4D4E36BE17753B1CCDE6FCA460906048" blockId="32.[151,1437,690,1975]" pageId="32" pageNumber="33">
<emphasis id="7F85EAAC17753B1CCDE6FCA462256024" bold="true" box="[199,319,798,823]" pageId="32" pageNumber="33">Paratypes</emphasis>
. (2 specimens). MZUSP 117346 (adult female, 
<quantity id="8A099B5B17753B1CCE51FCA460CA6025" box="[880,976,798,823]" metricMagnitude="-1" metricUnit="m" metricValue="4.05" pageId="32" pageNumber="33" unit="mm" value="405.0">405 mm</quantity>
DW), same data as holotype (
<figureCitation id="D5CA2A3B17753B1CC816FCA466946024" box="[1335,1422,798,823]" captionStart="FIGURE 25" captionStartId="34.[151,250,1017,1039]" captionTargetBox="[161,1425,206,983]" captionTargetId="figure@34.[150,1437,194,996]" captionTargetPageId="34" captionText="FIGURE 25. Paratype of Potamotrygon amazona, sp. nov. (MZUSP 117346, adult female, 405 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). A. Dorsal view. B. Ventral view." httpUri="https://zenodo.org/record/892801/files/figure.png" pageId="32" pageNumber="33">Fig. 25</figureCitation>
); MZUSP 117348 (adult male, 
<quantity id="8A099B5B17753B1CCCC3FCF961256049" box="[482,575,835,859]" metricMagnitude="-1" metricUnit="m" metricValue="4.9399999999999995" pageId="32" pageNumber="33" unit="mm" value="494.0">494 mm</quantity>
DW), same data as holotype.
</paragraph>
</subSubSection>
<subSubSection id="05EB653517753B1CCDE6FCDC664066AC" pageId="32" pageNumber="33" type="diagnosis">
<paragraph id="4D4E36BE17753B1CCDE6FCDC664066AC" blockId="32.[151,1437,690,1975]" pageId="32" pageNumber="33">
<emphasis id="7F85EAAC17753B1CCDE6FCDC6220606C" bold="true" box="[199,314,870,895]" pageId="32" pageNumber="33">Diagnosis</emphasis>
. 
<taxonomicName id="8AF14D3D17753B1CCC6AFCDD6140606D" box="[331,602,871,894]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CCC6AFCDD6140606D" box="[331,602,871,894]" italics="true" pageId="32" pageNumber="33">Potamotrygon amazona</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CCF42FCDC61A5606C" bold="true" box="[611,703,870,895]" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CCF42FCDC61A5606C" box="[611,703,870,895]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is distinguished from congeners, except 
<taxonomicName id="8AF14D3D17753B1CC9B8FCDD67EA606D" authorityName="Fontenelle, Silva &amp; Carvalho" authorityYear="2014" box="[1177,1264,870,894]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="limai">
<emphasis id="7F85EAAC17753B1CC9B8FCDD67EA606D" box="[1177,1264,870,894]" italics="true" pageId="32" pageNumber="33">P. limai</emphasis>
</taxonomicName>
, 
<taxonomicName id="8AF14D3D17753B1CC820FCDD6669606D" box="[1281,1395,870,894]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="scobina">
<emphasis id="7F85EAAC17753B1CC820FCDD6669606D" box="[1281,1395,870,894]" italics="true" pageId="32" pageNumber="33">P. scobina</emphasis>
</taxonomicName>
, 
<taxonomicName id="8AF14D3D17753B1CC8A6FCDD63EC60B1" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="garmani" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CC8A6FCDD63EC60B1" italics="true" pageId="32" pageNumber="33">P. garmani</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CCDDCFC30624C60B0" bold="true" box="[253,342,906,931]" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CCDDCFC30624C60B0" box="[253,342,906,931]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, and 
<taxonomicName id="8AF14D3D17753B1CCCB4FC31613360B0" box="[405,553,907,931]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="adamastor" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CCCB4FC31613360B0" box="[405,553,907,931]" italics="true" pageId="32" pageNumber="33">P. adamastor</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CCF11FC30619360B0" bold="true" box="[560,649,906,931]" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CCF11FC30619360B0" box="[560,649,906,931]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, by a combination of characters: disc relatively thick and robust, with a dark brownish to gray dorsal color, covered with numerous whitish to beige irregular spots, with small ocelli sometimes present; disc completely covered by denticles, with a high concentration of denticles on rostral portion of disc; rostral denticles simple, with a single central crown, and star-shaped basal plate; head denticles present star-shaped crowns, with a well-developed anterior dichotomy and small lateral dichotomies; caudal denticles with a central coronal plate and two anterior dichotomies, and a star-shaped basal plate; three angular cartilages of different sizes between jaw and hyomandibula; two to three irregular rows of thorns on dorsal tail midline, varying in size; tail long and robust, very prickly; tail base wide; cartilaginous rod relatively short. 
<taxonomicName id="8AF14D3D17753B1CC9AEFB3D6681678D" box="[1167,1435,1159,1182]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CC9AEFB3D6681678D" box="[1167,1435,1159,1182]" italics="true" pageId="32" pageNumber="33">Potamotrygon amazona</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CCDB6FB1063E867D0" bold="true" box="[151,242,1194,1219]" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CCDB6FB1063E867D0" box="[151,242,1194,1219]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is further separated from 
<taxonomicName id="8AF14D3D17753B1CCF3EFB11616C67D0" authorityName="Fontenelle, Silva &amp; Carvalho" authorityYear="2014" box="[543,630,1195,1219]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="limai">
<emphasis id="7F85EAAC17753B1CCF3EFB11616C67D0" box="[543,630,1195,1219]" italics="true" pageId="32" pageNumber="33">P. limai</emphasis>
</taxonomicName>
by not having any polygonal pattern over disc, by having a wider tail (16.7% DW 
<emphasis id="7F85EAAC17753B1CCC08FB75625A67F5" box="[297,320,1231,1254]" italics="true" pageId="32" pageNumber="33">vs</emphasis>
. 14.8% in 
<taxonomicName id="8AF14D3D17753B1CCCE0FB75610267F5" authorityName="Fontenelle, Silva &amp; Carvalho" authorityYear="2014" box="[449,536,1230,1254]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="limai">
<emphasis id="7F85EAAC17753B1CCCE0FB75610267F5" box="[449,536,1230,1254]" italics="true" pageId="32" pageNumber="33">P. limai</emphasis>
</taxonomicName>
), and by having simpler dermal denticles (smaller number and size of coronal ridges). From 
<taxonomicName id="8AF14D3D17753B1CCC18FB4962B76618" box="[313,429,1267,1291]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="scobina">
<emphasis id="7F85EAAC17753B1CCC18FB4962B76618" box="[313,429,1267,1291]" italics="true" pageId="32" pageNumber="33">P. scobina</emphasis>
</taxonomicName>
and 
<taxonomicName id="8AF14D3D17753B1CCCC6FB4961796619" box="[487,611,1267,1290]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="garmani" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CCCC6FB4961796619" box="[487,611,1267,1290]" italics="true" pageId="32" pageNumber="33">P. garmani</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CCF4DFB4861DD6618" bold="true" box="[620,711,1266,1291]" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CCF4DFB4861DD6618" box="[620,711,1266,1291]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
, 
<taxonomicName id="8AF14D3D17753B1CCFF7FB4960436619" box="[726,857,1267,1290]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CCFF7FB4960436619" box="[726,857,1267,1290]" italics="true" pageId="32" pageNumber="33">P. amazona</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CCE40FB4860A76618" bold="true" box="[865,957,1266,1291]" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CCE40FB4860A76618" box="[865,957,1266,1291]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is distinguished by having a considerably more muscular disc, a more intense concentration of denticles on disc, dorsal color with many more spots, and a wider and shorter tail (mean tail width 14.9% DW vs. 13.4% DW in 
<taxonomicName id="8AF14D3D17753B1CCE87FA81670D6640" box="[934,1047,1339,1363]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="scobina">
<emphasis id="7F85EAAC17753B1CCE87FA81670D6640" box="[934,1047,1339,1363]" italics="true" pageId="32" pageNumber="33">P. scobina</emphasis>
</taxonomicName>
and 14.1% DW in 
<taxonomicName id="8AF14D3D17753B1CC9D6FA8166756641" box="[1271,1391,1339,1362]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="garmani" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CC9D6FA8166756641" box="[1271,1391,1339,1362]" italics="true" pageId="32" pageNumber="33">P. garmani</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CC85BFA8063D26664" bold="true" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CC85BFA8063D26664" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
; mean tail length 86.1% DW vs. 121.5% DW in 
<taxonomicName id="8AF14D3D17753B1CCFC6FAE560436665" box="[743,857,1374,1398]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="scobina">
<emphasis id="7F85EAAC17753B1CCFC6FAE560436665" box="[743,857,1374,1398]" italics="true" pageId="32" pageNumber="33">P. scobina</emphasis>
</taxonomicName>
and 100.6% DW in 
<taxonomicName id="8AF14D3D17753B1CC91CFAE567AD6665" box="[1085,1207,1375,1398]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="garmani" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CC91CFAE567AD6665" box="[1085,1207,1375,1398]" italics="true" pageId="32" pageNumber="33">P. garmani</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CC99CFAE4660C6664" bold="true" box="[1213,1302,1374,1399]" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CC99CFAE4660C6664" box="[1213,1302,1374,1399]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
). Finally, 
<taxonomicName id="8AF14D3D17753B1CC8A6FAE563E66689" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17753B1CC8A6FAE563E66689" italics="true" pageId="32" pageNumber="33">P. amazona</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC17753B1CCC27FA3862796688" bold="true" box="[262,355,1410,1435]" pageId="32" pageNumber="33">
<taxonomicNameLabel id="64B657D717753B1CCC27FA3862796688" box="[262,355,1410,1435]" pageId="32" pageNumber="33" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is separated from 
<taxonomicName id="8AF14D3D17753B1CCF1EFA3961CC6688" box="[575,726,1411,1435]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="adamastor">
<emphasis id="7F85EAAC17753B1CCF1EFA3961CC6688" box="[575,726,1411,1435]" italics="true" pageId="32" pageNumber="33">P. adamastor</emphasis>
</taxonomicName>
by having more dermal denticles on disc, greater number of dorsal spots forming clusters, and a longer tail (mean tail length 86.1% DW vs. 78.1% DW in 
<taxonomicName id="8AF14D3D17753B1CC997FA1D665366AD" box="[1206,1353,1446,1470]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="32" pageNumber="33" phylum="Chordata" rank="species" species="adamastor">
<emphasis id="7F85EAAC17753B1CC997FA1D665366AD" box="[1206,1353,1446,1470]" italics="true" pageId="32" pageNumber="33">P. adamastor</emphasis>
</taxonomicName>
).
</paragraph>
</subSubSection>
<subSubSection id="05EB653517753B16CDE6FA7060BB610B" lastPageId="42" lastPageNumber="43" pageId="32" pageNumber="33" type="description">
<paragraph id="4D4E36BE17753B1CCDE6FA7066346411" blockId="32.[151,1437,690,1975]" pageId="32" pageNumber="33">
<emphasis id="7F85EAAC17753B1CCDE6FA70624B66F0" bold="true" box="[199,337,1482,1507]" pageId="32" pageNumber="33">Description</emphasis>
. Disc subcircular, longer than wide (DL 101.9–107.3% DW) (
<figureCitation id="D5CA2A3B17753B1CC929FA70677E66F0" box="[1032,1124,1482,1507]" captionStart="FIGURE 24" captionStartId="33.[151,250,966,988]" captionTargetBox="[164,1420,204,929]" captionTargetId="figure@33.[152,1435,193,944]" captionTargetPageId="33" captionText="FIGURE 24. Holotype of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). A. Dorsal view. B. Ventral view." httpUri="https://zenodo.org/record/892799/files/figure.png" pageId="32" pageNumber="33">Figs. 24</figureCitation>
, 
<figureCitation id="D5CA2A3B17753B1CC951FA70678A66F0" box="[1136,1168,1482,1507]" captionStart="FIGURE 25" captionStartId="34.[151,250,1017,1039]" captionTargetBox="[161,1425,206,983]" captionTargetId="figure@34.[150,1437,194,996]" captionTargetPageId="34" captionText="FIGURE 25. Paratype of Potamotrygon amazona, sp. nov. (MZUSP 117346, adult female, 405 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). A. Dorsal view. B. Ventral view." httpUri="https://zenodo.org/record/892801/files/figure.png" pageId="32" pageNumber="33">25</figureCitation>
). Rostral portion of disc broadly convex, presenting a small rounded protuberance on snout (
<figureCitation id="D5CA2A3B17753B1CCEF9FA5467296514" box="[984,1075,1518,1543]" captionStart="FIGURE 26" captionStartId="36.[151,250,1506,1528]" captionTargetBox="[150,1428,194,1470]" captionTargetId="figure@36.[150,1436,194,1485]" captionTargetPageId="36" captionText="FIGURE 26. Morphological details of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Dorsal head and snout region. B. Mouth and nostrils. C. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. D. Ventral view of pelvic fins, claspers and cloaca. E. Dorsal clasper." httpUri="https://zenodo.org/record/892803/files/figure.png" pageId="32" pageNumber="33">Fig. 26</figureCitation>
a). Disc robust, dorsoventrally compressed, with comparatively thick margins. Eyes small and oval, around 3 times smaller than spiracles. Spiracles rhomboidal (
<figureCitation id="D5CA2A3B17753B1CCCB9F98C62F6655C" box="[408,492,1590,1615]" captionStart="FIGURE 26" captionStartId="36.[151,250,1506,1528]" captionTargetBox="[150,1428,194,1470]" captionTargetId="figure@36.[150,1436,194,1485]" captionTargetPageId="36" captionText="FIGURE 26. Morphological details of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Dorsal head and snout region. B. Mouth and nostrils. C. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. D. Ventral view of pelvic fins, claspers and cloaca. E. Dorsal clasper." httpUri="https://zenodo.org/record/892803/files/figure.png" pageId="32" pageNumber="33">Fig. 26</figureCitation>
a), presenting a central internal papilla. Large and dorsally elevated head, up to 1/3 disc length, with interorbital distance 14.4–17.8% DW, and interspiracular distance 15.4–18.3% DW. Nasal curtains partially covering mouth, except at its margins. Mouth small and slightly convex, with a central notch (mouth width 8.5–10.2% DW, and internasal distance 7.5–8.6% DW) (
<figureCitation id="D5CA2A3B17753B1CCEEAF918673865A8" box="[971,1058,1698,1723]" captionStart="FIGURE 26" captionStartId="36.[151,250,1506,1528]" captionTargetBox="[150,1428,194,1470]" captionTargetId="figure@36.[150,1436,194,1485]" captionTargetPageId="36" captionText="FIGURE 26. Morphological details of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Dorsal head and snout region. B. Mouth and nostrils. C. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. D. Ventral view of pelvic fins, claspers and cloaca. E. Dorsal clasper." httpUri="https://zenodo.org/record/892803/files/figure.png" pageId="32" pageNumber="33">Fig. 26</figureCitation>
c). No labial ridges present. Five buccal papillae present, two posterior alternating with three anterior. Branchial basket wider than long, with space between first branchial slits 25.3–28.1% DW, and distance between fifth branchial slits 17.4–18.9% DW.
</paragraph>
<paragraph id="4D4E36BE17753B1CCDB6F8B4611764A5" blockId="32.[151,1437,690,1975]" pageId="32" pageNumber="33">
Teeth small and numerous, wider than long, set in quincunx in a narrow arched upper tooth plate and a wide and trapezoidal lower tooth plate (
<figureCitation id="D5CA2A3B17753B1CCCD1F888615D6458" box="[496,583,1842,1867]" captionStart="FIGURE 27" captionStartId="37.[151,250,1106,1128]" captionTargetBox="[150,1436,193,1085]" captionTargetId="figure@37.[150,1436,193,1085]" captionTargetPageId="37" captionText="FIGURE 27. Teeth of Potamotrygon amazona, sp. nov. (MZUSP 117345) A, B. Upper jaw. C, D. Lower jaw. Scale bar = 2 mm." httpUri="https://zenodo.org/record/892805/files/figure.png" pageId="32" pageNumber="33">Fig. 27</figureCitation>
). Tooth rows varying from 
<quantity id="8A099B5B17753B1CCEA5F88860F36458" box="[900,1001,1842,1867]" metricMagnitude="0" metricUnit="m" metricValue="1.3716" metricValueMax="1.4224" metricValueMin="1.3208" pageId="32" pageNumber="33" unit="in" value="54.0" valueMax="56.0" valueMin="52.0">52–56 in</quantity>
upper jaw and 
<quantity id="8A099B5B17753B1CC9BFF88866196458" box="[1182,1283,1842,1867]" metricMagnitude="0" metricUnit="m" metricValue="1.3462" metricValueMax="1.4731999999999998" metricValueMin="1.2192" pageId="32" pageNumber="33" unit="in" value="53.0" valueMax="58.0" valueMin="48.0">48–58 in</quantity>
lower jaw in males; single female specimen counted with 44 teeth in both jaws. Adult males present a single central pointed cusp on teeth in center of tooth plate. Lateral teeth in adult males, juvenile male examined, and female simple, presenting a single rounded cusp.
</paragraph>
<caption id="198E663617743B1DCDB6FC7C60B760E9" httpUri="https://zenodo.org/record/892799/files/figure.png" pageId="33" pageNumber="34" targetBox="[164,1420,204,929]" targetPageId="33">
<paragraph id="4D4E36BE17743B1DCDB6FC7C60B760E9" blockId="33.[151,1436,966,1018]" pageId="33" pageNumber="34">
<emphasis id="7F85EAAC17743B1DCDB6FC7C620160CF" bold="true" box="[151,283,966,988]" pageId="33" pageNumber="34">FIGURE 24</emphasis>
. Holotype of 
<taxonomicName id="8AF14D3D17743B1DCC8FFC7D61B960CF" box="[430,675,967,988]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="33" pageNumber="34" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17743B1DCC8FFC7D61B960CF" box="[430,675,967,988]" italics="true" pageId="33" pageNumber="34">Potamotrygon amazona</emphasis>
</taxonomicName>
, 
<emphasis id="7F85EAAC17743B1DCF90FC7C601960CF" bold="true" box="[689,771,966,988]" pageId="33" pageNumber="34">
<taxonomicNameLabel id="64B657D717743B1DCF90FC7C601960CF" box="[689,771,966,988]" pageId="33" pageNumber="34" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(MZUSP 117344, adult male, 532 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). 
<emphasis id="7F85EAAC17743B1DCF45FC5E616C60E9" bold="true" box="[612,630,996,1018]" pageId="33" pageNumber="34">A</emphasis>
. Dorsal view. 
<emphasis id="7F85EAAC17743B1DCE2BFC5E600160E9" bold="true" box="[778,795,996,1018]" pageId="33" pageNumber="34">B</emphasis>
. Ventral view.
</paragraph>
</caption>
<paragraph id="4D4E36BE17743B1DCDE6FBFC67DD6600" blockId="33.[151,1437,1094,1947]" pageId="33" pageNumber="34">
Pelvic fins broad (length 54.3–64.9% DW), subtriangular, with rounded corners and a slightly undulated posterior margin. Pelvic fin posterior margin barely projects beyond disc (
<figureCitation id="D5CA2A3B17743B1DCEF8FBD067376790" box="[985,1069,1130,1155]" captionStart="FIGURE 26" captionStartId="36.[151,250,1506,1528]" captionTargetBox="[150,1428,194,1470]" captionTargetId="figure@36.[150,1436,194,1485]" captionTargetPageId="36" captionText="FIGURE 26. Morphological details of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Dorsal head and snout region. B. Mouth and nostrils. C. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. D. Ventral view of pelvic fins, claspers and cloaca. E. Dorsal clasper." httpUri="https://zenodo.org/record/892803/files/figure.png" pageId="33" pageNumber="34">Fig. 26</figureCitation>
d). Length of anterior margins of pelvics 23.6–26.9% DW. Claspers robust and cone shaped; clasper base much more robust and wider than its rounded tip; clasper external length 9.6–12.0% DW and internal length 17.0–19.5% DW. Clasper groove long, slightly curved, with a semicircular apopyle, at level of posterior tip of pelvic fins; hypopyle oval and large, subterminal, anterior to clasper flap. Dorsal pseudosiphon oval, obliquely positioned (
<figureCitation id="D5CA2A3B17743B1DC97BFB4067B76600" box="[1114,1197,1274,1299]" captionStart="FIGURE 26" captionStartId="36.[151,250,1506,1528]" captionTargetBox="[150,1428,194,1470]" captionTargetId="figure@36.[150,1436,194,1485]" captionTargetPageId="36" captionText="FIGURE 26. Morphological details of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Dorsal head and snout region. B. Mouth and nostrils. C. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. D. Ventral view of pelvic fins, claspers and cloaca. E. Dorsal clasper." httpUri="https://zenodo.org/record/892803/files/figure.png" pageId="33" pageNumber="34">Fig. 26</figureCitation>
e).
</paragraph>
<paragraph id="4D4E36BE17743B1DCDE6FAA460B566B1" blockId="33.[151,1437,1094,1947]" pageId="33" pageNumber="34">
Tail robust and long, tail width 12.9–16.0% DW. Tail tapers more intensely from caudal sting origin (
<figureCitation id="D5CA2A3B17743B1DC80FFAA4669B6624" box="[1326,1409,1310,1335]" captionStart="FIGURE 26" captionStartId="36.[151,250,1506,1528]" captionTargetBox="[150,1428,194,1470]" captionTargetId="figure@36.[150,1436,194,1485]" captionTargetPageId="36" captionText="FIGURE 26. Morphological details of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Dorsal head and snout region. B. Mouth and nostrils. C. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. D. Ventral view of pelvic fins, claspers and cloaca. E. Dorsal clasper." httpUri="https://zenodo.org/record/892803/files/figure.png" pageId="33" pageNumber="34">Fig. 26</figureCitation>
b). Cartilaginous rod short and robust, around 1/3–1/4 tail length. Caudal sting origin relatively close to tail origin. Tail with numerous lateral denticules, but without defined lateral spine rows. Small dorsal and ventral folds on tail extremity. Caudal stings well developed, their length 16.6–19.2% DW.
</paragraph>
<paragraph id="4D4E36BE17743B1DCDE6FA1467C36489" blockId="33.[151,1437,1094,1947]" pageId="33" pageNumber="34">
<emphasis id="7F85EAAC17743B1DCDE6FA14625266D4" bold="true" box="[199,328,1454,1479]" pageId="33" pageNumber="34">Coloration</emphasis>
. (
<figureCitation id="D5CA2A3B17743B1DCC7EFA1462AF66D4" box="[351,437,1454,1479]" captionStart="FIGURE 28" captionStartId="37.[151,250,1889,1911]" captionTargetBox="[160,1422,1217,1848]" captionTargetId="figure@37.[150,1436,1209,1862]" captionTargetPageId="37" captionText="FIGURE 28. Color variation in Potamotrygon amazona, sp. nov. A. MZUSP 117347 (adult male, 560 mm DW). B. MZUSP 117345 (adult male, 584 mm DW)." httpUri="https://zenodo.org/record/892807/files/figure.png" pageId="33" pageNumber="34">Fig. 28</figureCitation>
). Dorsal disc brownish gray to olive, with numerous small irregular spots from white to yellow, covering disc, sometimes with small ocelli (especially on disc margins), but these without a defined black contour. Two overall patterns apparent concerning spots and ocelli: 1) disc covered with small irregular whitish spots, smaller and more numerous on central disc, not forming definitive patterns; with small oval spots present on disc margins, smaller than eyes but larger than most irregular spots; 2) smaller irregular spots present, more spaced apart, forming semicircular or circular patterns, sometimes with ocelli at center. Spots progressively larger from disc center to margins. Dark streaks on head, synarcual, pectoral girdle and tail base present in both patterns. Ventral disc white to beige, sometimes with a darker central blotch. Larger specimens sometimes with darker pattern on lateroposterior disc margins, not anterior to central disc. Intensity of dark pigmentation increases with age and size. Pelvic fin dorsally with same color pattern as disc margin, with a slender lighter posterior margin. Ventrally, pelvic fins whitish with a posterior dark margin, varying with specimen size and age. Claspers also whitish but with darker gray blotches. Dorsal tail dark, similar to disc. Tail sides with small groups of small whitish irregular spots, without ocelli. White irregular blotches sometimes present between smaller spots. Ventral tail light with dark blotches, continuous with those of disc; whitish blotches interspersed with darker ones.
</paragraph>
<caption id="198E663617773B1ECDB6FC4360B7673D" httpUri="https://zenodo.org/record/892801/files/figure.png" pageId="34" pageNumber="35" targetBox="[161,1425,206,983]" targetPageId="34">
<paragraph id="4D4E36BE17773B1ECDB6FC4360B7673D" blockId="34.[151,1435,1017,1070]" pageId="34" pageNumber="35">
<emphasis id="7F85EAAC17773B1ECDB6FC436200671C" bold="true" box="[151,282,1017,1039]" pageId="34" pageNumber="35">FIGURE 25</emphasis>
. Paratype of 
<emphasis id="7F85EAAC17773B1ECC84FC406185671C" box="[421,671,1018,1039]" italics="true" pageId="34" pageNumber="35">
<taxonomicName id="8AF14D3D17773B1ECC84FC406181671C" box="[421,667,1018,1039]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="34" pageNumber="35" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">Potamotrygon amazona</taxonomicName>
,
</emphasis>
<emphasis id="7F85EAAC17773B1ECF86FC4361E2671C" bold="true" box="[679,760,1017,1039]" pageId="34" pageNumber="35">
<taxonomicNameLabel id="64B657D717773B1ECF86FC4361E2671C" box="[679,760,1017,1039]" pageId="34" pageNumber="35" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(MZUSP 117346, adult female, 405 mm DW, rio Jutaí, upper rio Amazonas basin, state of Amazonas, Brazil). 
<emphasis id="7F85EAAC17773B1ECF45FBA2616C673D" bold="true" box="[612,630,1048,1070]" pageId="34" pageNumber="35">A</emphasis>
. Dorsal view. 
<emphasis id="7F85EAAC17773B1ECE2BFBA26001673D" bold="true" box="[778,795,1048,1070]" pageId="34" pageNumber="35">B</emphasis>
. Ventral view.
</paragraph>
</caption>
<paragraph id="4D4E36BE17773B1ECDE6FBE060DF6680" blockId="34.[151,1437,1114,1895]" pageId="34" pageNumber="35">
<emphasis id="7F85EAAC17773B1ECDE6FBE0628B6760" bold="true" box="[199,401,1114,1139]" pageId="34" pageNumber="35">Dermal denticles</emphasis>
. (
<figureCitation id="D5CA2A3B17773B1ECC88FBE062E56760" box="[425,511,1114,1139]" captionStart="FIGURE 29" captionStartId="38.[151,250,1885,1907]" captionTargetBox="[228,1339,193,1858]" captionTargetId="figure@38.[228,1339,193,1858]" captionTargetPageId="38" captionText="FIGURE 29. Scanning Electron Microscope (SEM) images of dermal denticles of Potamotrygon amazona, sp. nov. (based on MZUSP 117345) A. Dorsal rostral region. B. Dorsal rostral region in detail. C. Dorsal head region. D. Dorsal head region in detail. E. Dorsal caudal region. F. Dorsal caudal region in detail. Abbreviations: Bp, basal plate; Br, basal ridge; Cr, coronal ridge; Co, corona; Cd, coronal dichotomy; Cp, coronal plate." httpUri="https://zenodo.org/record/892809/files/figure.png" pageId="34" pageNumber="35">Fig. 29</figureCitation>
). Disc covered with dermal denticles, but more numerous and developed in three different regions. Rostral region presenting simple denticles, greatly varying in size (up to 3–4 times), with a single pointed crown. Basal plate (
<emphasis id="7F85EAAC17773B1ECCF0FB1862E967A8" bold="true" box="[465,499,1186,1211]" pageId="34" pageNumber="35">Bp</emphasis>
) barely apparent, with asymmetrical basal ridges (
<emphasis id="7F85EAAC17773B1EC908FB18675267A8" bold="true" box="[1065,1096,1186,1211]" pageId="34" pageNumber="35">Br</emphasis>
) varying in number from 5–7. Rostral denticles arranged in a semicircular pattern on disc. Head and central disc with star-shaped pattern, presenting a developed central coronal plate (
<emphasis id="7F85EAAC17773B1ECF82FB5061DD6610" bold="true" box="[675,711,1258,1283]" pageId="34" pageNumber="35">Cp</emphasis>
), with two lateral posterior ridges and two converging anterior coronal ridges (
<emphasis id="7F85EAAC17773B1ECC6DFAB462776634" bold="true" box="[332,365,1294,1319]" pageId="34" pageNumber="35">Cr</emphasis>
), these in two levels (
<figureCitation id="D5CA2A3B17773B1ECF53FAB461D36634" box="[626,713,1294,1319]" captionStart="FIGURE 29" captionStartId="38.[151,250,1885,1907]" captionTargetBox="[228,1339,193,1858]" captionTargetId="figure@38.[228,1339,193,1858]" captionTargetPageId="38" captionText="FIGURE 29. Scanning Electron Microscope (SEM) images of dermal denticles of Potamotrygon amazona, sp. nov. (based on MZUSP 117345) A. Dorsal rostral region. B. Dorsal rostral region in detail. C. Dorsal head region. D. Dorsal head region in detail. E. Dorsal caudal region. F. Dorsal caudal region in detail. Abbreviations: Bp, basal plate; Br, basal ridge; Cr, coronal ridge; Co, corona; Cd, coronal dichotomy; Cp, coronal plate." httpUri="https://zenodo.org/record/892809/files/figure.png" pageId="34" pageNumber="35">Fig. 29</figureCitation>
d). Single and double terminal dichotomies sometimes present. Basal plate poorly developed. Caudal region presenting a central well-developed coronal plate, curved posteriorly, with two anterior coronal ridges. Basal plate well developed, with 2–6 basal ridges. Two to three thorn rows on tail, varying in size, robust and curved posteriorly, with a marked basal plate.
</paragraph>
<paragraph id="4D4E36BE17773B1ECDE6FA24611B6474" blockId="34.[151,1437,1114,1895]" pageId="34" pageNumber="35">
<emphasis id="7F85EAAC17773B1ECDE6FA24611A66A4" bold="true" box="[199,512,1438,1463]" pageId="34" pageNumber="35">Ventral lateral-line canals</emphasis>
. (
<figureCitation id="D5CA2A3B17773B1ECF38FA24616A66A4" box="[537,624,1438,1463]" captionStart="FIGURE 30" captionStartId="39.[151,250,1263,1285]" captionTargetBox="[160,1428,198,1232]" captionTargetId="figure@39.[150,1436,193,1242]" captionTargetPageId="39" captionText="FIGURE 30. Ventral lateral-line canals of Potamotrygon amazona, sp. nov. (based on MZUSP 117345) A. Overall arrangement; B. Anterior portion in detail. Abbreviations: ACH, angular component of hyomandibular canal; AJL, anterior jugular loop; AST, anterior subpleural tubules; CON, orbitonasal component of supraorbital canal; HYC, hyomandibular canal; IOC, infraorbital canal; IOL, infraorbital loop; JCH, jugular component of hyomandibular canal; JUG, jugular canal; NAS, nasal canal; NIL, nasointerior loop; PJL, posterior jugular loop; PNC, prenasal component of nasal canal; PNL, prenasal loop; PST, posterior subpleural tubules; SOC, supraorbital canal; SOL, suborbital loop; SOI, suborbital component of infraorbital canal; SPC, subpleural component of hyomandibular canal; SPL, subpleural loop; SRC, subrostral component of supraorbital canal." httpUri="https://zenodo.org/record/892811/files/figure.png" pageId="34" pageNumber="35">Fig. 30</figureCitation>
). Hyomandibular canal (
<emphasis id="7F85EAAC17773B1ECEACFA2460D166A4" bold="true" box="[909,971,1438,1463]" pageId="34" pageNumber="35">HYC</emphasis>
) extends anteriorly from nostril, turning abruptly toward outer disc margins, extending parallel to anterior margin of disc. Anterior subpleural tubules not observed. Hyomandibular canal extends posteriorly as the subpleural component of hyomandibular canal (
<emphasis id="7F85EAAC17773B1EC876FA5C669666EC" bold="true" box="[1367,1420,1510,1535]" pageId="34" pageNumber="35">SPC</emphasis>
), slightly undulated. Subpleural loop (
<emphasis id="7F85EAAC17773B1ECF12F9B0617C6530" bold="true" box="[563,614,1546,1571]" pageId="34" pageNumber="35">SPL</emphasis>
) deflects abruptly interiorly just anterior to level of pelvic fins; posterior subpleural tubules absent. Jugular component (
<emphasis id="7F85EAAC17773B1ECF86F99461C56554" bold="true" box="[679,735,1582,1607]" pageId="34" pageNumber="35">JCH</emphasis>
) projects anteriorly with a slight undulation towards branchial basket. Angular component of hyomandibular canal (
<emphasis id="7F85EAAC17773B1ECFD3F9E8602A6578" bold="true" box="[754,816,1618,1643]" pageId="34" pageNumber="35">ACH</emphasis>
) runs external to branchial slits, and turns interiorly to the jugular canal (
<emphasis id="7F85EAAC17773B1ECC43F9CC6280659C" bold="true" box="[354,410,1654,1679]" pageId="34" pageNumber="35">JUG</emphasis>
) anterior to the branchial basket, reaching the posterior jugular loop (
<emphasis id="7F85EAAC17773B1EC986F9CC67C3659C" bold="true" box="[1191,1241,1654,1679]" pageId="34" pageNumber="35">PJL</emphasis>
). From this loop, the infraorbital canal (
<emphasis id="7F85EAAC17773B1ECC82F92062C265A0" bold="true" box="[419,472,1690,1715]" pageId="34" pageNumber="35">IOC</emphasis>
) turns externally to form infraorbital loop (
<emphasis id="7F85EAAC17773B1ECECBF920670465A0" bold="true" box="[1002,1054,1690,1715]" pageId="34" pageNumber="35">IOL</emphasis>
). The infraorbital canal extends anteriorly, with slight undulations, curving toward disc center, forming the suborbital loop (
<emphasis id="7F85EAAC17773B1EC99EF90467ED65C4" bold="true" box="[1215,1271,1726,1751]" pageId="34" pageNumber="35">SOL</emphasis>
). Supraorbital canal (
<emphasis id="7F85EAAC17773B1ECDC3F958620665E8" bold="true" box="[226,284,1762,1787]" pageId="34" pageNumber="35">SOC</emphasis>
) extends anteriorly from the anterior jugular loop (
<emphasis id="7F85EAAC17773B1ECE7DF958608B65E8" bold="true" box="[860,913,1762,1787]" pageId="34" pageNumber="35">AJL</emphasis>
). Orbitonasal component of supraorbital canal (
<emphasis id="7F85EAAC17773B1ECD81F8BC63C4640C" bold="true" box="[160,222,1798,1823]" pageId="34" pageNumber="35">CON</emphasis>
) extends towards nostrils forming prenasal loop (
<emphasis id="7F85EAAC17773B1ECE0BF8BC6078640C" bold="true" box="[810,866,1798,1823]" pageId="34" pageNumber="35">PNL</emphasis>
). Nasal canal (
<emphasis id="7F85EAAC17773B1EC939F8BC674A640C" bold="true" box="[1048,1104,1798,1823]" pageId="34" pageNumber="35">NAS</emphasis>
) short and straight, directed toward mouth from anterior jugular loop. Prenasal component of nasal canal (
<emphasis id="7F85EAAC17773B1ECEDDF890672C6450" bold="true" box="[1020,1078,1834,1859]" pageId="34" pageNumber="35">PNC</emphasis>
) extends towards anterior snout from anterior margin of nostrils.
</paragraph>
<caption id="198E663617763B1FCDB6FF2760C663A7" ID-Table-UUID="198E663617763B1FCDB6FF2760C663A7" box="[151,988,157,181]" httpUri="http://table.plazi.org/id/198E663617763B1FCDB6FF2760C663A7" pageId="35" pageNumber="36" targetBox="[159,1414,245,1387]" targetIsTable="true" targetPageId="35">
<paragraph id="4D4E36BE17763B1FCDB6FF2760C663A7" blockId="35.[151,1404,157,226]" box="[151,988,157,181]" pageId="35" pageNumber="36">
<emphasis id="7F85EAAC17763B1FCDB6FF27621163A7" bold="true" box="[151,267,157,180]" pageId="35" pageNumber="36">TABLE 5.</emphasis>
Morphometric data for 
<taxonomicName id="8AF14D3D17763B1FCF28FF24619B63A6" box="[521,641,158,181]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="35" pageNumber="36" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17763B1FCF28FF24619B63A6" box="[521,641,158,181]" italics="true" pageId="35" pageNumber="36">P. amazona</emphasis>
</taxonomicName>
<taxonomicNameLabel id="64B657D717763B1FCFA9FF2761C663A7" box="[648,732,157,180]" pageId="35" pageNumber="36" rank="species">sp. nov.</taxonomicNameLabel>
<emphasis id="7F85EAAC17763B1FCFC3FF27601E63A7" bold="true" box="[738,772,157,180]" pageId="35" pageNumber="36">SD</emphasis>
: standard deviation.
</paragraph>
</caption>
<paragraph id="4D4E36BE17763B1BCDBEFF77669365C3" blockId="35.[151,1404,157,226]" lastBlockId="39.[151,1436,1540,2032]" lastPageId="39" lastPageNumber="40" pageId="35" pageNumber="36">
Measurements N 
<typeStatus id="924A881C17763B1FCF7DFF7661A063F1" box="[604,698,204,226]" pageId="35" pageNumber="36" type="holotype">Holotype</typeStatus>
Range 
<typeStatus id="924A881C17763B1FCE62FF77608663F1" box="[835,924,205,226]" pageId="35" pageNumber="36" type="paratype">Paratype</typeStatus>
Range Mean SD 
<emphasis id="7F85EAAC17723B1BCDE6F9BE62DA650E" bold="true" box="[199,448,1540,1565]" pageId="39" pageNumber="40">Skeletal morphology</emphasis>
. 
<emphasis id="7F85EAAC17723B1BCCF0F9BF6161650F" box="[465,635,1541,1564]" italics="true" pageId="39" pageNumber="40">Neurocranium.</emphasis>
Nasal capsules (
<emphasis id="7F85EAAC17723B1BCE65F9BE6076650E" bold="true" box="[836,876,1540,1565]" pageId="39" pageNumber="40">NC</emphasis>
) ventrolaterally expanded, their anterior margin rounded, with an internal ventromedial sept in between (
<figureCitation id="D5CA2A3B17723B1BCE70F99D60B66553" box="[849,940,1575,1600]" captionStart="FIGURE 31" captionStartId="40.[151,250,1833,1855]" captionTargetBox="[151,1435,539,1811]" captionTargetId="figure@40.[151,1435,539,1811]" captionTargetPageId="40" captionText="FIGURE 31. Skeletal anatomy (from radiographs) of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Ventral view of anterior disc and jaws. B. Angular cartilages, left side. C. Pectoral girdle, ventral view. D. Tail thorns and clasper skeleton. E. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium." httpUri="https://zenodo.org/record/892813/files/figure.png" pageId="39" pageNumber="40">Fig. 31</figureCitation>
). Precerebral fontanelle (
<emphasis id="7F85EAAC17723B1BC9FEF99D660F6553" bold="true" box="[1247,1301,1575,1600]" pageId="39" pageNumber="40">PCF</emphasis>
) wide and subcircular, with straight anterior margins, posteriorly delimited by a subtriangular epiphysial bar (
<emphasis id="7F85EAAC17723B1BC874F9F666916576" bold="true" box="[1365,1419,1612,1637]" pageId="39" pageNumber="40">EBP</emphasis>
). Frontoparietal fontanelle (
<emphasis id="7F85EAAC17723B1BCCE9F9D562E1659B" bold="true" box="[456,507,1647,1672]" pageId="39" pageNumber="40">FPF</emphasis>
) subtriangular, narrowing posteriorly, extending to level of anterior margin of postorbital processes; fontanellae together keyhole-shaped. Postorbital processes (
<emphasis id="7F85EAAC17723B1BC97CF92E678F65BE" bold="true" box="[1117,1173,1684,1709]" pageId="39" pageNumber="40">POP</emphasis>
) prominent, long and narrow, projecting anterolaterally to posterior angular cartilage. Prespiracular cartilage (
<emphasis id="7F85EAAC17723B1BC94EF90D67BE65C3" bold="true" box="[1135,1188,1719,1744]" pageId="39" pageNumber="40">PSC</emphasis>
) posteriorly curved.
</paragraph>
<paragraph id="4D4E36BE17763B1FCDBEFE8666666678" pageId="35" pageNumber="36">
<table id="3FF1C41E1776C4C3CDBEFF4F669C6678" box="[159,1414,245,1387]" gridcols="6" gridrows="13" pageId="35" pageNumber="36">
<tr id="F3C134FC1776C4C3CDBEFF4F669C6269" box="[159,1414,245,378]" gridrow="0" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFF4F61066269" box="[159,540,245,378]" gridcol="0" gridrow="0" pageId="35" pageNumber="36">Total length 9 Disc length 9</th>
<th id="B0105D801776C4C3CF7AFF4F61996269" box="[603,643,245,378]" gridcol="1" gridrow="0" pageId="35" pageNumber="36">mm 972 571</th>
<th id="B0105D801776C4C3CF84FF4F60396269" box="[677,803,245,378]" gridcol="2" gridrow="0" pageId="35" pageNumber="36">% DW mm - 717 107.3 433</th>
<th id="B0105D801776C4C3CE4DFF4F67E86269" box="[876,1266,245,378]" gridcol="3" gridrow="0" pageId="35" pageNumber="36">%DW mm % DW - 717–1055 - 106.9 433–595 101.9–108.7</th>
<th id="B0105D801776C4C3C827FF4F66516269" box="[1286,1355,245,378]" gridcol="4" gridrow="0" pageId="35" pageNumber="36">% DW - 105.2</th>
<th id="B0105D801776C4C3C87DFF4F669C6269" box="[1372,1414,245,378]" gridcol="5" gridrow="0" pageId="35" pageNumber="36">% DW - 2.3</th>
</tr>
<tr id="F3C134FC1776C4C3CDBEFE37667E62B0" box="[159,1380,397,419]" gridrow="1" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFE37610662B0" box="[159,540,397,419]" gridcol="0" gridrow="1" pageId="35" pageNumber="36">Disc width 9</th>
<td id="B0105D801776C4C3CF7AFE37619962B0" box="[603,643,397,419]" gridcol="1" gridrow="1" pageId="35" pageNumber="36">532</td>
<td id="B0105D801776C4C3CF84FE37603962B0" box="[677,803,397,419]" gridcol="2" gridrow="1" pageId="35" pageNumber="36">- 405</td>
<td id="B0105D801776C4C3CE4DFE3767E862B0" box="[876,1266,397,419]" gridcol="3" gridrow="1" pageId="35" pageNumber="36">- 405–584 -</td>
<td id="B0105D801776C4C3C827FE37665162B0" box="[1286,1355,397,419]" gridcol="4" gridrow="1" pageId="35" pageNumber="36">-</td>
<td id="B0105D801776C4C3C87DFE37669C62B0" box="[1372,1414,397,419]" gridcol="5" gridrow="1" pageId="35" pageNumber="36">-</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFE0C666662E7" box="[159,1404,438,500]" gridrow="2" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFE0C610662E7" box="[159,540,438,500]" gridcol="0" gridrow="2" pageId="35" pageNumber="36">Interorbital space 9 Interspiracular space 9</th>
<td id="B0105D801776C4C3CF7AFE0C619962E7" box="[603,643,438,500]" gridcol="1" gridrow="2" pageId="35" pageNumber="36">80 84</td>
<td id="B0105D801776C4C3CF84FE0C603962E7" box="[677,803,438,500]" gridcol="2" gridrow="2" pageId="35" pageNumber="36">15.0 72 15.8 74</td>
<td id="B0105D801776C4C3CE4DFE0C67E862E7" box="[876,1266,438,500]" gridcol="3" gridrow="2" pageId="35" pageNumber="36">17.8 71–88 14.4–17.8 18.3 74–100 15.4–18.3</td>
<td id="B0105D801776C4C3C827FE0C665162E7" box="[1286,1355,438,500]" gridcol="4" gridrow="2" pageId="35" pageNumber="36">15.8 16.9</td>
<td id="B0105D801776C4C3C87DFE0C669C62E7" box="[1372,1414,438,500]" gridcol="5" gridrow="2" pageId="35" pageNumber="36">1.1 0.9</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFDBD66666156" box="[159,1404,519,581]" gridrow="3" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFDBD61066156" box="[159,540,519,581]" gridcol="0" gridrow="3" pageId="35" pageNumber="36">Eye length 9 Spiracle length 9</th>
<td id="B0105D801776C4C3CF7AFDBD61996156" box="[603,643,519,581]" gridcol="1" gridrow="3" pageId="35" pageNumber="36">12 41</td>
<td id="B0105D801776C4C3CF84FDBD60396156" box="[677,803,519,581]" gridcol="2" gridrow="3" pageId="35" pageNumber="36">2.3 13 7.7 32</td>
<td id="B0105D801776C4C3CE4DFDBD67E86156" box="[876,1266,519,581]" gridcol="3" gridrow="3" pageId="35" pageNumber="36">3.2 12–18 2.3–3.2 7.9 32–48 6.9–8.6</td>
<td id="B0105D801776C4C3C827FDBD66516156" box="[1286,1355,519,581]" gridcol="4" gridrow="3" pageId="35" pageNumber="36">2.7 7.7</td>
<td id="B0105D801776C4C3C87DFDBD669C6156" box="[1372,1414,519,581]" gridcol="5" gridrow="3" pageId="35" pageNumber="36">0.3 0.6</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFDE266666185" box="[159,1404,600,662]" gridrow="4" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFDE261066185" box="[159,540,600,662]" gridcol="0" gridrow="4" pageId="35" pageNumber="36">Preorbital length 9 Prenasal length 9</th>
<td id="B0105D801776C4C3CF7AFDE261996185" box="[603,643,600,662]" gridcol="1" gridrow="4" pageId="35" pageNumber="36">137 90</td>
<td id="B0105D801776C4C3CF84FDE260396185" box="[677,803,600,662]" gridcol="2" gridrow="4" pageId="35" pageNumber="36">25.8 103 16.9 71</td>
<td id="B0105D801776C4C3CE4DFDE267E86185" box="[876,1266,600,662]" gridcol="3" gridrow="4" pageId="35" pageNumber="36">25.4 103–142 22.1–25.8 17.5 71–97 16.1–17.5</td>
<td id="B0105D801776C4C3C827FDE266516185" box="[1286,1355,600,662]" gridcol="4" gridrow="4" pageId="35" pageNumber="36">24.6 16.8</td>
<td id="B0105D801776C4C3C87DFDE2669C6185" box="[1372,1414,600,662]" gridcol="5" gridrow="4" pageId="35" pageNumber="36">1.2 0.4</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFD13666661F4" box="[159,1404,681,743]" gridrow="5" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFD13610661F4" box="[159,540,681,743]" gridcol="0" gridrow="5" pageId="35" pageNumber="36">Preoral length 9 Internarial space 9</th>
<td id="B0105D801776C4C3CF7AFD13619961F4" box="[603,643,681,743]" gridcol="1" gridrow="5" pageId="35" pageNumber="36">123 44</td>
<td id="B0105D801776C4C3CF84FD13603961F4" box="[677,803,681,743]" gridcol="2" gridrow="5" pageId="35" pageNumber="36">23.1 98 8.3 35</td>
<td id="B0105D801776C4C3CE4DFD1367E861F4" box="[876,1266,681,743]" gridcol="3" gridrow="5" pageId="35" pageNumber="36">24.2 98–130 22.3–25.8 8.6 35–48 7.5–9.5</td>
<td id="B0105D801776C4C3C827FD13665161F4" box="[1286,1355,681,743]" gridcol="4" gridrow="5" pageId="35" pageNumber="36">23.6 8.5</td>
<td id="B0105D801776C4C3C87DFD13669C61F4" box="[1372,1414,681,743]" gridcol="5" gridrow="5" pageId="35" pageNumber="36">0.8 0.6</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFD4066666075" box="[159,1404,762,870]" gridrow="6" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFD4061066075" box="[159,540,762,870]" gridcol="0" gridrow="6" pageId="35" pageNumber="36">
Mouth width 9 Space between 1 
<taxonomicName id="8AF14D3D17763B1FCC68FC9862A76028" box="[329,445,802,827]" pageId="35" pageNumber="36" rank="subSpecies" subSpecies="branchial">
<emphasis id="7F85EAAC17763B1FCC68FC986248603D" bold="true" box="[329,338,802,814]" pageId="35" pageNumber="36">st</emphasis>
branchial
</taxonomicName>
slits 9 Space between 5 
<emphasis id="7F85EAAC17763B1FCC68FCF7624E604A" bold="true" box="[329,340,845,857]" pageId="35" pageNumber="36">th</emphasis>
branchial slits 9
</th>
<td id="B0105D801776C4C3CF7AFD4061996075" box="[603,643,762,870]" gridcol="1" gridrow="6" pageId="35" pageNumber="36">54 143 201</td>
<td id="B0105D801776C4C3CF84FD4060396075" box="[677,803,762,870]" gridcol="2" gridrow="6" pageId="35" pageNumber="36">10.2 39 26.9 114 37.8 81</td>
<td id="B0105D801776C4C3CE4DFD4067E86075" box="[876,1266,762,870]" gridcol="3" gridrow="6" pageId="35" pageNumber="36">9.6 39–54 8.5–10.2 28.1 114–148 25.3–28.1 20.0 81–201 17.4–37.8</td>
<td id="B0105D801776C4C3C827FD4066516075" box="[1286,1355,762,870]" gridcol="4" gridrow="6" pageId="35" pageNumber="36">9.4 26.9 21.6</td>
<td id="B0105D801776C4C3C87DFD40669C6075" box="[1372,1414,762,870]" gridcol="5" gridrow="6" pageId="35" pageNumber="36">0.6 1.0 6.1</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFCC3666660A4" box="[159,1404,889,951]" gridrow="7" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFCC3610660A4" box="[159,540,889,951]" gridcol="0" gridrow="7" pageId="35" pageNumber="36">Branchial basket length 9 Pelvic fin length 9</th>
<td id="B0105D801776C4C3CF7AFCC3619960A4" box="[603,643,889,951]" gridcol="1" gridrow="7" pageId="35" pageNumber="36">84 136</td>
<td id="B0105D801776C4C3CF84FCC3603960A4" box="[677,803,889,951]" gridcol="2" gridrow="7" pageId="35" pageNumber="36">15.8 68 25.6 109</td>
<td id="B0105D801776C4C3CE4DFCC367E860A4" box="[876,1266,889,951]" gridcol="3" gridrow="7" pageId="35" pageNumber="36">16.8 68–99 14.5–17.7 26.9 109–138 23.1–27.3</td>
<td id="B0105D801776C4C3C827FCC3665160A4" box="[1286,1355,889,951]" gridcol="4" gridrow="7" pageId="35" pageNumber="36">16.5 24.9</td>
<td id="B0105D801776C4C3C87DFCC3669C60A4" box="[1372,1414,889,951]" gridcol="5" gridrow="7" pageId="35" pageNumber="36">1.0 1.5</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFC706666671B" box="[159,1404,970,1032]" gridrow="8" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFC706106671B" box="[159,540,970,1032]" gridcol="0" gridrow="8" pageId="35" pageNumber="36">Pelvic fin width 9 Clasper external edge length 9</th>
<td id="B0105D801776C4C3CF7AFC706199671B" box="[603,643,970,1032]" gridcol="1" gridrow="8" pageId="35" pageNumber="36">301 51</td>
<td id="B0105D801776C4C3CF84FC706039671B" box="[677,803,970,1032]" gridcol="2" gridrow="8" pageId="35" pageNumber="36">56.6 263 9.6 -</td>
<td id="B0105D801776C4C3CE4DFC7067E8671B" box="[876,1266,970,1032]" gridcol="3" gridrow="8" pageId="35" pageNumber="36">64.9 263–352 52.6–64.9 - 26–70 5.6–13.3</td>
<td id="B0105D801776C4C3C827FC706651671B" box="[1286,1355,970,1032]" gridcol="4" gridrow="8" pageId="35" pageNumber="36">56.9 10.2</td>
<td id="B0105D801776C4C3C87DFC70669C671B" box="[1372,1414,970,1032]" gridcol="5" gridrow="8" pageId="35" pageNumber="36">3.7 2.4</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFBA16666674A" box="[159,1404,1051,1113]" gridrow="9" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFBA16106674A" box="[159,540,1051,1113]" gridcol="0" gridrow="9" pageId="35" pageNumber="36">Clasper internal edge length 9 Cloaca to tail tip 9</th>
<td id="B0105D801776C4C3CF7AFBA16199674A" box="[603,643,1051,1113]" gridcol="1" gridrow="9" pageId="35" pageNumber="36">100 468</td>
<td id="B0105D801776C4C3CF84FBA16039674A" box="[677,803,1051,1113]" gridcol="2" gridrow="9" pageId="35" pageNumber="36">18.8 - 88.0 327</td>
<td id="B0105D801776C4C3CE4DFBA167E8674A" box="[876,1266,1051,1113]" gridcol="3" gridrow="9" pageId="35" pageNumber="36">- 51–114 11.0–21.0 80.7 327–580 80.7–109.2</td>
<td id="B0105D801776C4C3C827FBA16651674A" box="[1286,1355,1051,1113]" gridcol="4" gridrow="9" pageId="35" pageNumber="36">17.8 89.3</td>
<td id="B0105D801776C4C3C87DFBA1669C674A" box="[1372,1414,1051,1113]" gridcol="5" gridrow="9" pageId="35" pageNumber="36">3.0 9.6</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFBD6666667B9" box="[159,1404,1132,1194]" gridrow="10" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFBD6610667B9" box="[159,540,1132,1194]" gridcol="0" gridrow="10" pageId="35" pageNumber="36">Tail width 9 Snout to cloaca 9</th>
<td id="B0105D801776C4C3CF7AFBD6619967B9" box="[603,643,1132,1194]" gridcol="1" gridrow="10" pageId="35" pageNumber="36">82 470</td>
<td id="B0105D801776C4C3CF84FBD6603967B9" box="[677,803,1132,1194]" gridcol="2" gridrow="10" pageId="35" pageNumber="36">15.4 61 88.3 370</td>
<td id="B0105D801776C4C3CE4DFBD667E867B9" box="[876,1266,1132,1194]" gridcol="3" gridrow="10" pageId="35" pageNumber="36">15.1 61–115 12.9–21.7 91.4 370–497 82.9–92.7</td>
<td id="B0105D801776C4C3C827FBD6665167B9" box="[1286,1355,1132,1194]" gridcol="4" gridrow="10" pageId="35" pageNumber="36">16.7 88.7</td>
<td id="B0105D801776C4C3C87DFBD6669C67B9" box="[1372,1414,1132,1194]" gridcol="5" gridrow="10" pageId="35" pageNumber="36">2.8 2.9</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFB0766666651" box="[159,1404,1213,1346]" gridrow="11" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFB0761066651" box="[159,540,1213,1346]" gridcol="0" gridrow="11" pageId="35" pageNumber="36">Pectoral axil to posterior edge of 9 pelvic fin Cloaca to caudal sting 9 Caudal sting length 9</th>
<td id="B0105D801776C4C3CF7AFB0761996651" box="[603,643,1213,1346]" gridcol="1" gridrow="11" pageId="35" pageNumber="36">85 301 99</td>
<td id="B0105D801776C4C3CF84FB0760396651" box="[677,803,1213,1346]" gridcol="2" gridrow="11" pageId="35" pageNumber="36">16.0 53 56.6 211 18.6 75</td>
<td id="B0105D801776C4C3CE4DFB0767E86651" box="[876,1266,1213,1346]" gridcol="3" gridrow="11" pageId="35" pageNumber="36">13.1 53–85 11.0–16.0 52.1 211–339 50.0–64.7 18.5 75–112 16.6–20.2</td>
<td id="B0105D801776C4C3C827FB0766516651" box="[1286,1355,1213,1346]" gridcol="4" gridrow="11" pageId="35" pageNumber="36">14.0 56.7 18.5</td>
<td id="B0105D801776C4C3C87DFB07669C6651" box="[1372,1414,1213,1346]" gridcol="5" gridrow="11" pageId="35" pageNumber="36">1.5 4.7 1.0</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEFAEF66666678" box="[159,1404,1365,1387]" gridrow="12" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFAEF61066678" box="[159,540,1365,1387]" gridcol="0" gridrow="12" pageId="35" pageNumber="36">Caudal sting width 9</th>
<td id="B0105D801776C4C3CF7AFAEF61996678" box="[603,643,1365,1387]" gridcol="1" gridrow="12" pageId="35" pageNumber="36">10</td>
<td id="B0105D801776C4C3CF84FAEF60396678" box="[677,803,1365,1387]" gridcol="2" gridrow="12" pageId="35" pageNumber="36">1.9 6</td>
<td id="B0105D801776C4C3CE4DFAEF67E86678" box="[876,1266,1365,1387]" gridcol="3" gridrow="12" pageId="35" pageNumber="36">1.5 6–14 1.2–2.7</td>
<td id="B0105D801776C4C3C827FAEF66516678" box="[1286,1355,1365,1387]" gridcol="4" gridrow="12" pageId="35" pageNumber="36">1.8</td>
<td id="B0105D801776C4C3C87DFAEF669C6678" box="[1372,1414,1365,1387]" gridcol="5" gridrow="12" pageId="35" pageNumber="36">0.5</td>
</tr>
</table>
</paragraph>
<caption id="198E663617763B1FCDB6FA0E67D666D8" ID-Table-UUID="198E663617763B1FCDB6FA0E67D666D8" box="[151,1228,1460,1484]" httpUri="http://table.plazi.org/id/198E663617763B1FCDB6FA0E67D666D8" pageId="35" pageNumber="36" targetBox="[159,1414,245,1387]" targetIsTable="true" targetPageId="35">
<paragraph id="4D4E36BE17763B1FCDB6FA0E67D666D8" blockId="35.[151,1228,1460,1484]" box="[151,1228,1460,1484]" pageId="35" pageNumber="36">
<emphasis id="7F85EAAC17763B1FCDB6FA0E621166D8" bold="true" box="[151,267,1460,1483]" pageId="35" pageNumber="36">TABLE 6.</emphasis>
Meristic data for 
<taxonomicName id="8AF14D3D17763B1FCCE9FA0F615A66DF" box="[456,576,1461,1484]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="35" pageNumber="36" phylum="Chordata" rank="species" species="amazona">
<emphasis id="7F85EAAC17763B1FCCE9FA0F615A66DF" box="[456,576,1461,1484]" italics="true" pageId="35" pageNumber="36">P. amazona</emphasis>
</taxonomicName>
sp. nov. 
<emphasis id="7F85EAAC17763B1FCF80FA0E61D966D8" bold="true" box="[673,707,1460,1483]" pageId="35" pageNumber="36">SD</emphasis>
: standard deviation. (*) Single female specimen.
</paragraph>
</caption>
<paragraph id="4D4E36BE17763B1FCDBEFA5E662B64F9" pageId="35" pageNumber="36">
<table id="3FF1C41E1776C4C3CDBEFA5E664964F9" box="[159,1363,1508,2026]" gridcols="7" gridrows="13" pageId="35" pageNumber="36">
<tr id="F3C134FC1776C4C3CDBEFA5E664966E9" box="[159,1363,1508,1530]" gridrow="0" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEFA5E62D066E9" box="[159,458,1508,1530]" gridcol="0" gridrow="0" pageId="35" pageNumber="36">Counts</th>
<th id="B0105D801776C4C3CF4AFA5E616466E9" box="[619,638,1508,1530]" gridcol="1" gridrow="0" pageId="35" pageNumber="36">N</th>
<th id="B0105D801776C4C3CF97FA5E600E66E9" box="[694,788,1508,1530]" gridcol="2" gridrow="0" pageId="35" pageNumber="36">Holotype</th>
<th id="B0105D801776C4C3CE59FA5E60EF66E9" box="[888,1013,1508,1530]" gridcol="3" gridrow="0" pageId="35" pageNumber="36">Range</th>
<th id="B0105D801776C4C3C91BFA5E676E66E9" box="[1082,1140,1508,1530]" gridcol="4" gridrow="0" pageId="35" pageNumber="36">Mean</th>
<th id="B0105D801776C4C3C9E1FA5E67FA66E9" box="[1216,1248,1508,1530]" gridcol="5" gridrow="0" pageId="35" pageNumber="36">SD</th>
<th id="B0105D801776C4C3C839FA5E664966E9" box="[1304,1363,1508,1530]" gridcol="6" gridrow="0" pageId="35" pageNumber="36">Mode</th>
</tr>
<tr id="F3C134FC1776C4C3CDBEF9B766496530" box="[159,1363,1549,1571]" gridrow="1" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF9B762D06530" box="[159,458,1549,1571]" gridcol="0" gridrow="1" pageId="35" pageNumber="36">1. Precaudal vertebrae</th>
<td id="B0105D801776C4C3CF4AF9B761646530" box="[619,638,1549,1571]" gridcol="1" gridrow="1" pageId="35" pageNumber="36">5</td>
<td id="B0105D801776C4C3CF97F9B7600E6530" box="[694,788,1549,1571]" gridcol="2" gridrow="1" pageId="35" pageNumber="36">24</td>
<td id="B0105D801776C4C3CE59F9B760EF6530" box="[888,1013,1549,1571]" gridcol="3" gridrow="1" pageId="35" pageNumber="36">23–25</td>
<td id="B0105D801776C4C3C91BF9B7676E6530" box="[1082,1140,1549,1571]" gridcol="4" gridrow="1" pageId="35" pageNumber="36">24.0</td>
<td id="B0105D801776C4C3C9E1F9B767FA6530" box="[1216,1248,1549,1571]" gridcol="5" gridrow="1" pageId="35" pageNumber="36">0.7</td>
<td id="B0105D801776C4C3C839F9B766496530" box="[1304,1363,1549,1571]" gridcol="6" gridrow="1" pageId="35" pageNumber="36">24</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF98D6649655E" box="[159,1363,1591,1613]" gridrow="2" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF98D62D0655E" box="[159,458,1591,1613]" gridcol="0" gridrow="2" pageId="35" pageNumber="36">2. Caudal vertebrae</th>
<td id="B0105D801776C4C3CF4AF98D6164655E" box="[619,638,1591,1613]" gridcol="1" gridrow="2" pageId="35" pageNumber="36">4</td>
<td id="B0105D801776C4C3CF97F98D600E655E" box="[694,788,1591,1613]" gridcol="2" gridrow="2" pageId="35" pageNumber="36">97</td>
<td id="B0105D801776C4C3CE59F98D60EF655E" box="[888,1013,1591,1613]" gridcol="3" gridrow="2" pageId="35" pageNumber="36">95- 99</td>
<td id="B0105D801776C4C3C91BF98D676E655E" box="[1082,1140,1591,1613]" gridcol="4" gridrow="2" pageId="35" pageNumber="36">96.5</td>
<td id="B0105D801776C4C3C9E1F98D67FA655E" box="[1216,1248,1591,1613]" gridcol="5" gridrow="2" pageId="35" pageNumber="36">1.9</td>
<td id="B0105D801776C4C3C839F98D6649655E" box="[1304,1363,1591,1613]" gridcol="6" gridrow="2" pageId="35" pageNumber="36">-</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF9DA66496565" box="[159,1363,1632,1654]" gridrow="3" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF9DA62D06565" box="[159,458,1632,1654]" gridcol="0" gridrow="3" pageId="35" pageNumber="36">3. Total vertebrae</th>
<td id="B0105D801776C4C3CF4AF9DA61646565" box="[619,638,1632,1654]" gridcol="1" gridrow="3" pageId="35" pageNumber="36">4</td>
<td id="B0105D801776C4C3CF97F9DA600E6565" box="[694,788,1632,1654]" gridcol="2" gridrow="3" pageId="35" pageNumber="36">121</td>
<td id="B0105D801776C4C3CE59F9DA60EF6565" box="[888,1013,1632,1654]" gridcol="3" gridrow="3" pageId="35" pageNumber="36">119–122</td>
<td id="B0105D801776C4C3C91BF9DA676E6565" box="[1082,1140,1632,1654]" gridcol="4" gridrow="3" pageId="35" pageNumber="36">120.5</td>
<td id="B0105D801776C4C3C9E1F9DA67FA6565" box="[1216,1248,1632,1654]" gridcol="5" gridrow="3" pageId="35" pageNumber="36">1.3</td>
<td id="B0105D801776C4C3C839F9DA66496565" box="[1304,1363,1632,1654]" gridcol="6" gridrow="3" pageId="35" pageNumber="36">-</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF930664965B3" box="[159,1363,1674,1696]" gridrow="4" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF93062D065B3" box="[159,458,1674,1696]" gridcol="0" gridrow="4" pageId="35" pageNumber="36">4. Diplospondylous vertebrae</th>
<td id="B0105D801776C4C3CF4AF930616465B3" box="[619,638,1674,1696]" gridcol="1" gridrow="4" pageId="35" pageNumber="36">4</td>
<td id="B0105D801776C4C3CF97F930600E65B3" box="[694,788,1674,1696]" gridcol="2" gridrow="4" pageId="35" pageNumber="36">108</td>
<td id="B0105D801776C4C3CE59F93060EF65B3" box="[888,1013,1674,1696]" gridcol="3" gridrow="4" pageId="35" pageNumber="36">106–108</td>
<td id="B0105D801776C4C3C91BF930676E65B3" box="[1082,1140,1674,1696]" gridcol="4" gridrow="4" pageId="35" pageNumber="36">107.3</td>
<td id="B0105D801776C4C3C9E1F93067FA65B3" box="[1216,1248,1674,1696]" gridcol="5" gridrow="4" pageId="35" pageNumber="36">1.0</td>
<td id="B0105D801776C4C3C839F930664965B3" box="[1304,1363,1674,1696]" gridcol="6" gridrow="4" pageId="35" pageNumber="36">-</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF909664965DA" box="[159,1363,1715,1737]" gridrow="5" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF90962D065DA" box="[159,458,1715,1737]" gridcol="0" gridrow="5" pageId="35" pageNumber="36">5. Caudal sting vertebrae</th>
<td id="B0105D801776C4C3CF4AF909616465DA" box="[619,638,1715,1737]" gridcol="1" gridrow="5" pageId="35" pageNumber="36">5</td>
<td id="B0105D801776C4C3CF97F909600E65DA" box="[694,788,1715,1737]" gridcol="2" gridrow="5" pageId="35" pageNumber="36">98</td>
<td id="B0105D801776C4C3CE59F90960EF65DA" box="[888,1013,1715,1737]" gridcol="3" gridrow="5" pageId="35" pageNumber="36">97 -100</td>
<td id="B0105D801776C4C3C91BF909676E65DA" box="[1082,1140,1715,1737]" gridcol="4" gridrow="5" pageId="35" pageNumber="36">39.8</td>
<td id="B0105D801776C4C3C9E1F90967FA65DA" box="[1216,1248,1715,1737]" gridcol="5" gridrow="5" pageId="35" pageNumber="36">1.3</td>
<td id="B0105D801776C4C3C839F909664965DA" box="[1304,1363,1715,1737]" gridcol="6" gridrow="5" pageId="35" pageNumber="36">97</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF966664965E1" box="[159,1363,1756,1778]" gridrow="6" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF96662D065E1" box="[159,458,1756,1778]" gridcol="0" gridrow="6" pageId="35" pageNumber="36">6. Upper tooth rows</th>
<td id="B0105D801776C4C3CF4AF966616465E1" box="[619,638,1756,1778]" gridcol="1" gridrow="6" pageId="35" pageNumber="36">4</td>
<td id="B0105D801776C4C3CF97F966600E65E1" box="[694,788,1756,1778]" gridcol="2" gridrow="6" pageId="35" pageNumber="36">-</td>
<td id="B0105D801776C4C3CE59F96660EF65E1" box="[888,1013,1756,1778]" gridcol="3" gridrow="6" pageId="35" pageNumber="36">(44*) 52–56</td>
<td id="B0105D801776C4C3C91BF966676E65E1" box="[1082,1140,1756,1778]" gridcol="4" gridrow="6" pageId="35" pageNumber="36">12.2</td>
<td id="B0105D801776C4C3C9E1F96667FA65E1" box="[1216,1248,1756,1778]" gridcol="5" gridrow="6" pageId="35" pageNumber="36">4.4</td>
<td id="B0105D801776C4C3C839F966664965E1" box="[1304,1363,1756,1778]" gridcol="6" gridrow="6" pageId="35" pageNumber="36">-</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF8BF66496408" box="[159,1363,1797,1819]" gridrow="7" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF8BF62D06408" box="[159,458,1797,1819]" gridcol="0" gridrow="7" pageId="35" pageNumber="36">7. Lower tooth rows</th>
<td id="B0105D801776C4C3CF4AF8BF61646408" box="[619,638,1797,1819]" gridcol="1" gridrow="7" pageId="35" pageNumber="36">4</td>
<td id="B0105D801776C4C3CF97F8BF600E6408" box="[694,788,1797,1819]" gridcol="2" gridrow="7" pageId="35" pageNumber="36">-</td>
<td id="B0105D801776C4C3CE59F8BF60EF6408" box="[888,1013,1797,1819]" gridcol="3" gridrow="7" pageId="35" pageNumber="36">(44*) 48–58</td>
<td id="B0105D801776C4C3C91BF8BF676E6408" box="[1082,1140,1797,1819]" gridcol="4" gridrow="7" pageId="35" pageNumber="36">31.2</td>
<td id="B0105D801776C4C3C9E1F8BF67FA6408" box="[1216,1248,1797,1819]" gridcol="5" gridrow="7" pageId="35" pageNumber="36">6.6</td>
<td id="B0105D801776C4C3C839F8BF66496408" box="[1304,1363,1797,1819]" gridcol="6" gridrow="7" pageId="35" pageNumber="36">-</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF89566496456" box="[159,1363,1839,1861]" gridrow="8" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF89562D06456" box="[159,458,1839,1861]" gridcol="0" gridrow="8" pageId="35" pageNumber="36">8. Propterygial radials</th>
<td id="B0105D801776C4C3CF4AF89561646456" box="[619,638,1839,1861]" gridcol="1" gridrow="8" pageId="35" pageNumber="36">5</td>
<td id="B0105D801776C4C3CF97F895600E6456" box="[694,788,1839,1861]" gridcol="2" gridrow="8" pageId="35" pageNumber="36">40</td>
<td id="B0105D801776C4C3CE59F89560EF6456" box="[888,1013,1839,1861]" gridcol="3" gridrow="8" pageId="35" pageNumber="36">39–40</td>
<td id="B0105D801776C4C3C91BF895676E6456" box="[1082,1140,1839,1861]" gridcol="4" gridrow="8" pageId="35" pageNumber="36">83.2</td>
<td id="B0105D801776C4C3C9E1F89567FA6456" box="[1216,1248,1839,1861]" gridcol="5" gridrow="8" pageId="35" pageNumber="36">0.4</td>
<td id="B0105D801776C4C3C839F89566496456" box="[1304,1363,1839,1861]" gridcol="6" gridrow="8" pageId="35" pageNumber="36">40</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF8E26649647D" box="[159,1363,1880,1902]" gridrow="9" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF8E262D0647D" box="[159,458,1880,1902]" gridcol="0" gridrow="9" pageId="35" pageNumber="36">9. Mesopterygial radials</th>
<td id="B0105D801776C4C3CF4AF8E26164647D" box="[619,638,1880,1902]" gridcol="1" gridrow="9" pageId="35" pageNumber="36">5</td>
<td id="B0105D801776C4C3CF97F8E2600E647D" box="[694,788,1880,1902]" gridcol="2" gridrow="9" pageId="35" pageNumber="36">12</td>
<td id="B0105D801776C4C3CE59F8E260EF647D" box="[888,1013,1880,1902]" gridcol="3" gridrow="9" pageId="35" pageNumber="36">12–13</td>
<td id="B0105D801776C4C3C91BF8E2676E647D" box="[1082,1140,1880,1902]" gridcol="4" gridrow="9" pageId="35" pageNumber="36">21.4</td>
<td id="B0105D801776C4C3C9E1F8E267FA647D" box="[1216,1248,1880,1902]" gridcol="5" gridrow="9" pageId="35" pageNumber="36">0.4</td>
<td id="B0105D801776C4C3C839F8E26649647D" box="[1304,1363,1880,1902]" gridcol="6" gridrow="9" pageId="35" pageNumber="36">12</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF8386649648B" box="[159,1363,1922,1944]" gridrow="10" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF83862D0648B" box="[159,458,1922,1944]" gridcol="0" gridrow="10" pageId="35" pageNumber="36">10. Metapterygial radials</th>
<td id="B0105D801776C4C3CF4AF8386164648B" box="[619,638,1922,1944]" gridcol="1" gridrow="10" pageId="35" pageNumber="36">5</td>
<td id="B0105D801776C4C3CF97F838600E648B" box="[694,788,1922,1944]" gridcol="2" gridrow="10" pageId="35" pageNumber="36">31</td>
<td id="B0105D801776C4C3CE59F83860EF648B" box="[888,1013,1922,1944]" gridcol="3" gridrow="10" pageId="35" pageNumber="36">31–32</td>
<td id="B0105D801776C4C3C91BF838676E648B" box="[1082,1140,1922,1944]" gridcol="4" gridrow="10" pageId="35" pageNumber="36">104.6</td>
<td id="B0105D801776C4C3C9E1F83867FA648B" box="[1216,1248,1922,1944]" gridcol="5" gridrow="10" pageId="35" pageNumber="36">0.4</td>
<td id="B0105D801776C4C3C839F8386649648B" box="[1304,1363,1922,1944]" gridcol="6" gridrow="10" pageId="35" pageNumber="36">31</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF811664964D2" box="[159,1363,1963,1985]" gridrow="11" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF81162D064D2" box="[159,458,1963,1985]" gridcol="0" gridrow="11" pageId="35" pageNumber="36">11. Total pectoral radials</th>
<td id="B0105D801776C4C3CF4AF811616464D2" box="[619,638,1963,1985]" gridcol="1" gridrow="11" pageId="35" pageNumber="36">5</td>
<td id="B0105D801776C4C3CF97F811600E64D2" box="[694,788,1963,1985]" gridcol="2" gridrow="11" pageId="35" pageNumber="36">83</td>
<td id="B0105D801776C4C3CE59F81160EF64D2" box="[888,1013,1963,1985]" gridcol="3" gridrow="11" pageId="35" pageNumber="36">82–84</td>
<td id="B0105D801776C4C3C91BF811676E64D2" box="[1082,1140,1963,1985]" gridcol="4" gridrow="11" pageId="35" pageNumber="36">98.2</td>
<td id="B0105D801776C4C3C9E1F81167FA64D2" box="[1216,1248,1963,1985]" gridcol="5" gridrow="11" pageId="35" pageNumber="36">0.8</td>
<td id="B0105D801776C4C3C839F811664964D2" box="[1304,1363,1963,1985]" gridcol="6" gridrow="11" pageId="35" pageNumber="36">83</td>
</tr>
<tr id="F3C134FC1776C4C3CDBEF86E664964F9" box="[159,1363,2004,2026]" gridrow="12" pageId="35" pageNumber="36">
<th id="B0105D801776C4C3CDBEF86E62D064F9" box="[159,458,2004,2026]" gridcol="0" gridrow="12" pageId="35" pageNumber="36">12. Pelvic radials</th>
<td id="B0105D801776C4C3CF4AF86E616464F9" box="[619,638,2004,2026]" gridcol="1" gridrow="12" pageId="35" pageNumber="36">5</td>
<td id="B0105D801776C4C3CF97F86E600E64F9" box="[694,788,2004,2026]" gridcol="2" gridrow="12" pageId="35" pageNumber="36">20</td>
<td id="B0105D801776C4C3CE59F86E60EF64F9" box="[888,1013,2004,2026]" gridcol="3" gridrow="12" pageId="35" pageNumber="36">20–25</td>
<td id="B0105D801776C4C3C91BF86E676E64F9" box="[1082,1140,2004,2026]" gridcol="4" gridrow="12" pageId="35" pageNumber="36">50.5</td>
<td id="B0105D801776C4C3C9E1F86E67FA64F9" box="[1216,1248,2004,2026]" gridcol="5" gridrow="12" pageId="35" pageNumber="36">2.1</td>
<td id="B0105D801776C4C3C839F86E664964F9" box="[1304,1363,2004,2026]" gridcol="6" gridrow="12" pageId="35" pageNumber="36">21</td>
</tr>
</table>
</paragraph>
<caption id="198E663617713B18CDB6FA5861FF6526" httpUri="https://zenodo.org/record/892803/files/figure.png" pageId="36" pageNumber="37" targetBox="[150,1428,194,1470]" targetPageId="36">
<paragraph id="4D4E36BE17713B18CDB6FA5861FF6526" blockId="36.[151,1436,1506,1589]" pageId="36" pageNumber="37">
<emphasis id="7F85EAAC17713B18CDB6FA58620666EB" bold="true" box="[151,284,1506,1528]" pageId="36" pageNumber="37">FIGURE 26</emphasis>
. Morphological details of 
<emphasis id="7F85EAAC17713B18CF18FA59602F66EB" box="[569,821,1507,1528]" italics="true" pageId="36" pageNumber="37">
<taxonomicName id="8AF14D3D17713B18CF18FA59602866EB" box="[569,818,1507,1528]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="36" pageNumber="37" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">Potamotrygon amazona</taxonomicName>
,
</emphasis>
<emphasis id="7F85EAAC17713B18CE1EFA58608E66EB" bold="true" box="[831,916,1506,1528]" pageId="36" pageNumber="37">
<taxonomicNameLabel id="64B657D717713B18CE1EFA58608E66EB" box="[831,916,1506,1528]" pageId="36" pageNumber="37" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(MZUSP 117344, adult male, 532 mm DW). 
<emphasis id="7F85EAAC17713B18C8A2FA58668F66EB" bold="true" box="[1411,1429,1506,1528]" pageId="36" pageNumber="37">A</emphasis>
. Dorsal head and snout region. 
<emphasis id="7F85EAAC17713B18CCE8F9BB62C06504" bold="true" box="[457,474,1537,1559]" pageId="36" pageNumber="37">B</emphasis>
. Mouth and nostrils. 
<emphasis id="7F85EAAC17713B18CF91F9BB61D86504" bold="true" box="[688,706,1537,1559]" pageId="36" pageNumber="37">C</emphasis>
. Dorsal view of tail origin, pelvic fins, and dorsal spine rows. 
<emphasis id="7F85EAAC17713B18C815F9BB665C6504" bold="true" box="[1332,1350,1537,1559]" pageId="36" pageNumber="37">D</emphasis>
. Ventral view of pelvic fins, claspers and cloaca. 
<emphasis id="7F85EAAC17713B18CF10F9A561586526" bold="true" box="[561,578,1567,1589]" pageId="36" pageNumber="37">E</emphasis>
. Dorsal clasper.
</paragraph>
</caption>
<caption id="198E663617703B19CDB6FBE863DC6794" httpUri="https://zenodo.org/record/892805/files/figure.png" pageId="37" pageNumber="38" targetBox="[150,1436,193,1085]" targetPageId="37">
<paragraph id="4D4E36BE17703B19CDB6FBE863DC6794" blockId="37.[151,1435,1106,1159]" pageId="37" pageNumber="38">
<emphasis id="7F85EAAC17703B19CDB6FBE86200677B" bold="true" box="[151,282,1106,1128]" pageId="37" pageNumber="38">FIGURE 27</emphasis>
. Teeth of 
<taxonomicName id="8AF14D3D17703B19CCA5FBE96163677B" box="[388,633,1107,1128]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="37" pageNumber="38" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17703B19CCA5FBE96163677B" box="[388,633,1107,1128]" italics="true" pageId="37" pageNumber="38">Potamotrygon amazona</emphasis>
</taxonomicName>
, 
<emphasis id="7F85EAAC17703B19CFA7FBE861C2677B" bold="true" box="[646,728,1106,1128]" pageId="37" pageNumber="38">
<taxonomicNameLabel id="64B657D717703B19CFA7FBE861C2677B" box="[646,728,1106,1128]" pageId="37" pageNumber="38" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(MZUSP 117345) 
<emphasis id="7F85EAAC17703B19CE81FBE860C8677B" bold="true" box="[928,978,1106,1128]" pageId="37" pageNumber="38">A, B</emphasis>
. Upper jaw. 
<emphasis id="7F85EAAC17703B19C976FBE86790677B" bold="true" box="[1111,1162,1106,1128]" pageId="37" pageNumber="38">C, D</emphasis>
. Lower jaw. Scale bar = 2 mm.
</paragraph>
</caption>
<caption id="198E663617703B19CDB6F8DB62E1648B" httpUri="https://zenodo.org/record/892807/files/figure.png" pageId="37" pageNumber="38" targetBox="[160,1422,1217,1848]" targetPageId="37">
<paragraph id="4D4E36BE17703B19CDB6F8DB62E1648B" blockId="37.[151,1419,1889,1944]" pageId="37" pageNumber="38">
<emphasis id="7F85EAAC17703B19CDB6F8DB62036464" bold="true" box="[151,281,1889,1911]" pageId="37" pageNumber="38">FIGURE 28</emphasis>
. Color variation in 
<taxonomicName id="8AF14D3D17703B19CCC1F8D861C86464" box="[480,722,1890,1911]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="37" pageNumber="38" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17703B19CCC1F8D861C86464" box="[480,722,1890,1911]" italics="true" pageId="37" pageNumber="38">Potamotrygon amazona</emphasis>
</taxonomicName>
, 
<emphasis id="7F85EAAC17703B19CFFEF8DB60526464" bold="true" box="[735,840,1889,1911]" pageId="37" pageNumber="38">
<taxonomicNameLabel id="64B657D717703B19CFFEF8DB602A6464" box="[735,816,1889,1911]" pageId="37" pageNumber="38" rank="species">sp. nov.</taxonomicNameLabel>
A
</emphasis>
. MZUSP 117347 (adult male, 560 mm DW). 
<emphasis id="7F85EAAC17703B19C83BF8DB66316464" bold="true" box="[1306,1323,1889,1911]" pageId="37" pageNumber="38">B</emphasis>
. MZUSP 117345 (adult male, 584 mm DW).
</paragraph>
</caption>
<caption id="198E663617733B1ACDB6F8E7601C64DC" httpUri="https://zenodo.org/record/892809/files/figure.png" pageId="38" pageNumber="39" targetBox="[228,1339,193,1858]" targetPageId="38">
<paragraph id="4D4E36BE17733B1ACDB6F8E7601C64DC" blockId="38.[151,1436,1885,1999]" pageId="38" pageNumber="39">
<emphasis id="7F85EAAC17733B1ACDB6F8E762036460" bold="true" box="[151,281,1885,1907]" pageId="38" pageNumber="39">FIGURE 29</emphasis>
. Scanning Electron Microscope (SEM) images of dermal denticles of 
<taxonomicName id="8AF14D3D17733B1ACEC2F8E467CF6460" box="[995,1237,1886,1907]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="38" pageNumber="39" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17733B1ACEC2F8E467CF6460" box="[995,1237,1886,1907]" italics="true" pageId="38" pageNumber="39">Potamotrygon amazona</emphasis>
</taxonomicName>
, 
<emphasis id="7F85EAAC17733B1AC9C3F8E766286460" bold="true" box="[1250,1330,1885,1907]" pageId="38" pageNumber="39">
<taxonomicNameLabel id="64B657D717733B1AC9C3F8E766286460" box="[1250,1330,1885,1907]" pageId="38" pageNumber="39" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(based on MZUSP 117345) 
<emphasis id="7F85EAAC17733B1ACC6FF8C6627A6481" bold="true" box="[334,352,1916,1938]" pageId="38" pageNumber="39">A</emphasis>
. Dorsal rostral region. 
<emphasis id="7F85EAAC17733B1ACF71F8C6617B6481" bold="true" box="[592,609,1916,1938]" pageId="38" pageNumber="39">B</emphasis>
. Dorsal rostral region in detail. 
<emphasis id="7F85EAAC17733B1ACE8DF8C660A46481" bold="true" box="[940,958,1916,1938]" pageId="38" pageNumber="39">C</emphasis>
. Dorsal head region. 
<emphasis id="7F85EAAC17733B1AC9BCF8C667B56481" bold="true" box="[1181,1199,1916,1938]" pageId="38" pageNumber="39">D</emphasis>
. Dorsal head region in detail. 
<emphasis id="7F85EAAC17733B1ACDFCF82163F464A2" bold="true" box="[221,238,1947,1969]" pageId="38" pageNumber="39">E</emphasis>
. Dorsal caudal region. 
<emphasis id="7F85EAAC17733B1ACCFEF82162F664A2" bold="true" box="[479,492,1947,1969]" pageId="38" pageNumber="39">F</emphasis>
. Dorsal caudal region in detail. Abbreviations: 
<emphasis id="7F85EAAC17733B1ACEF7F82160EE64A2" bold="true" box="[982,1012,1947,1969]" pageId="38" pageNumber="39">Bp</emphasis>
, basal plate; 
<emphasis id="7F85EAAC17733B1AC95FF821678364A2" bold="true" box="[1150,1177,1947,1969]" pageId="38" pageNumber="39">Br</emphasis>
, basal ridge; 
<emphasis id="7F85EAAC17733B1AC804F821665B64A2" bold="true" box="[1317,1345,1947,1969]" pageId="38" pageNumber="39">Cr</emphasis>
, coronal ridge; 
<emphasis id="7F85EAAC17733B1ACDF9F80363ED64DC" bold="true" box="[216,247,1977,1999]" pageId="38" pageNumber="39">Co</emphasis>
, corona; 
<emphasis id="7F85EAAC17733B1ACC77F803626C64DC" bold="true" box="[342,374,1977,1999]" pageId="38" pageNumber="39">Cd</emphasis>
, coronal dichotomy; 
<emphasis id="7F85EAAC17733B1ACF6EF803617564DC" bold="true" box="[591,623,1977,1999]" pageId="38" pageNumber="39">Cp</emphasis>
, coronal plate.
</paragraph>
</caption>
<caption id="198E663617723B1BCDB6FB55624966CF" httpUri="https://zenodo.org/record/892811/files/figure.png" pageId="39" pageNumber="40" targetBox="[160,1428,198,1232]" targetPageId="39">
<paragraph id="4D4E36BE17723B1BCDB6FB55624966CF" blockId="39.[151,1436,1263,1500]" pageId="39" pageNumber="40">
<emphasis id="7F85EAAC17723B1BCDB6FB55623A6616" bold="true" box="[151,288,1263,1285]" pageId="39" pageNumber="40">FIGURE 30</emphasis>
. Ventral lateral-line canals of 
<taxonomicName id="8AF14D3D17723B1BCF59FB4B60686615" box="[632,882,1265,1286]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="39" pageNumber="40" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC17723B1BCF59FB4B60686615" box="[632,882,1265,1286]" italics="true" pageId="39" pageNumber="40">Potamotrygon amazona</emphasis>
</taxonomicName>
, 
<emphasis id="7F85EAAC17723B1BCEA6FB5560C56616" bold="true" box="[903,991,1263,1285]" pageId="39" pageNumber="40">
<taxonomicNameLabel id="64B657D717723B1BCEA6FB5560C56616" box="[903,991,1263,1285]" pageId="39" pageNumber="40" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(based on MZUSP 117345) 
<emphasis id="7F85EAAC17723B1BC808FB5566216616" bold="true" box="[1321,1339,1263,1285]" pageId="39" pageNumber="40">A</emphasis>
. Overall arrangement; 
<emphasis id="7F85EAAC17723B1BCC04FAB4622C6637" bold="true" box="[293,310,1294,1316]" pageId="39" pageNumber="40">B</emphasis>
. Anterior portion in detail. Abbreviations: 
<emphasis id="7F85EAAC17723B1BCFD7FAB460346637" bold="true" box="[758,814,1294,1316]" pageId="39" pageNumber="40">ACH</emphasis>
, angular component of hyomandibular canal; 
<emphasis id="7F85EAAC17723B1BC82FFAB466246637" bold="true" box="[1294,1342,1294,1316]" pageId="39" pageNumber="40">AJL</emphasis>
, anterior jugular loop; 
<emphasis id="7F85EAAC17723B1BCC09FA97624D6650" bold="true" box="[296,343,1325,1347]" pageId="39" pageNumber="40">AST</emphasis>
, anterior subpleural tubules; 
<emphasis id="7F85EAAC17723B1BCFB1FA9761D26650" bold="true" box="[656,712,1325,1347]" pageId="39" pageNumber="40">CON</emphasis>
, orbitonasal component of supraorbital canal; 
<emphasis id="7F85EAAC17723B1BC998FA9767EB6650" bold="true" box="[1209,1265,1325,1347]" pageId="39" pageNumber="40">HYC</emphasis>
, hyomandibular canal; 
<emphasis id="7F85EAAC17723B1BCDFAFAF662116671" bold="true" box="[219,267,1356,1378]" pageId="39" pageNumber="40">IOC</emphasis>
, infraorbital canal; 
<emphasis id="7F85EAAC17723B1BCCF7FAF6611E6671" bold="true" box="[470,516,1356,1378]" pageId="39" pageNumber="40">IOL</emphasis>
, infraorbital loop; 
<emphasis id="7F85EAAC17723B1BCFE9FAF661E06671" bold="true" box="[712,762,1356,1378]" pageId="39" pageNumber="40">JCH</emphasis>
, jugular component of hyomandibular canal; 
<emphasis id="7F85EAAC17723B1BC9F3FAF666186671" bold="true" box="[1234,1282,1356,1378]" pageId="39" pageNumber="40">JUG</emphasis>
, jugular canal; 
<emphasis id="7F85EAAC17723B1BCDB6FAD063D06693" bold="true" box="[151,202,1386,1408]" pageId="39" pageNumber="40">NAS</emphasis>
, nasal canal; 
<emphasis id="7F85EAAC17723B1BCC43FAD062956693" bold="true" box="[354,399,1386,1408]" pageId="39" pageNumber="40">NIL</emphasis>
, nasointerior loop; 
<emphasis id="7F85EAAC17723B1BCF45FAD0618B6693" bold="true" box="[612,657,1386,1408]" pageId="39" pageNumber="40">PJL</emphasis>
, posterior jugular loop; 
<emphasis id="7F85EAAC17723B1BCEBAFAD060D56693" bold="true" box="[923,975,1386,1408]" pageId="39" pageNumber="40">PNC</emphasis>
, prenasal component of nasal canal; 
<emphasis id="7F85EAAC17723B1BC842FAD0668C6693" bold="true" box="[1379,1430,1386,1408]" pageId="39" pageNumber="40">PNL</emphasis>
, prenasal loop; 
<emphasis id="7F85EAAC17723B1BCC0AFA33624D668C" bold="true" box="[299,343,1417,1439]" pageId="39" pageNumber="40">PST</emphasis>
, posterior subpleural tubules; 
<emphasis id="7F85EAAC17723B1BCFA8FA3361A7668C" bold="true" box="[649,701,1417,1439]" pageId="39" pageNumber="40">SOC</emphasis>
, supraorbital canal; 
<emphasis id="7F85EAAC17723B1BCEABFA3360A7668C" bold="true" box="[906,957,1417,1439]" pageId="39" pageNumber="40">SOL</emphasis>
, suborbital loop; 
<emphasis id="7F85EAAC17723B1BC94CFA336783668C" bold="true" box="[1133,1177,1417,1439]" pageId="39" pageNumber="40">SOI</emphasis>
, suborbital component of infraorbital canal; 
<emphasis id="7F85EAAC17723B1BCC75FA1D629E66AE" bold="true" box="[340,388,1447,1469]" pageId="39" pageNumber="40">SPC</emphasis>
, subpleural component of hyomandibular canal; 
<emphasis id="7F85EAAC17723B1BCE5AFA1D60B366AE" bold="true" box="[891,937,1447,1469]" pageId="39" pageNumber="40">SPL</emphasis>
, subpleural loop; 
<emphasis id="7F85EAAC17723B1BC942FA1D678C66AE" bold="true" box="[1123,1174,1447,1469]" pageId="39" pageNumber="40">SRC</emphasis>
, subrostral component of supraorbital canal.
</paragraph>
</caption>
<paragraph id="4D4E36BE17723B14CDB6F967602B6253" blockId="39.[151,1436,1540,2032]" lastBlockId="40.[151,1436,151,490]" lastPageId="40" lastPageNumber="41" pageId="39" pageNumber="40">
<emphasis id="7F85EAAC17723B1BCDB6F96762E865E7" box="[151,498,1756,1780]" italics="true" pageId="39" pageNumber="40">Jaws and hyomandibular arch.</emphasis>
(
<figureCitation id="D5CA2A3B17723B1BCF20F966614765E7" box="[513,605,1756,1781]" captionStart="FIGURE 31" captionStartId="40.[151,250,1833,1855]" captionTargetBox="[151,1435,539,1811]" captionTargetId="figure@40.[151,1435,539,1811]" captionTargetPageId="40" captionText="FIGURE 31. Skeletal anatomy (from radiographs) of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Ventral view of anterior disc and jaws. B. Angular cartilages, left side. C. Pectoral girdle, ventral view. D. Tail thorns and clasper skeleton. E. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium." httpUri="https://zenodo.org/record/892813/files/figure.png" pageId="39" pageNumber="40">Figs. 31</figureCitation>
a, b). Hyomandibular arch (
<emphasis id="7F85EAAC17723B1BCEB3F96660C865E6" bold="true" box="[914,978,1756,1781]" pageId="39" pageNumber="40">HYO</emphasis>
) elongated and anterolaterally projected, slightly curved anteriorly. Three angular cartilages present. Anterior angular cartilage (
<emphasis id="7F85EAAC17723B1BC9ABF94567DC640B" bold="true" box="[1162,1222,1791,1816]" pageId="39" pageNumber="40">AAC</emphasis>
) slightly concave, about 1/5–1/4 length of hyomandibulae. Posterior angular cartilage (
<emphasis id="7F85EAAC17723B1BCEB4F89E60D0642E" bold="true" box="[917,970,1828,1853]" pageId="39" pageNumber="40">PAC</emphasis>
) more straight, slightly smaller and more slender than anterior angular cartilage. Lateral angular cartilage (
<emphasis id="7F85EAAC17723B1BCEB2F8FD60D46473" bold="true" box="[915,974,1863,1888]" pageId="39" pageNumber="40">LAC</emphasis>
) subcircular, between posterior angular cartilage and hyomandibula, about 1/4–1/3 length of posterior angular cartilage. Meckel's cartilage (
<emphasis id="7F85EAAC17723B1BC82FF8D666276496" bold="true" box="[1294,1341,1900,1925]" pageId="39" pageNumber="40">MC</emphasis>
) robust, internal margin with subretangular corners; its posterior margin bears a prominent ventrolateral process (
<emphasis id="7F85EAAC17723B1BC80EF835667D64BB" bold="true" box="[1327,1383,1935,1960]" pageId="39" pageNumber="40">VTP</emphasis>
) not contacting angular cartilages, and a robust lateroanterior process (
<emphasis id="7F85EAAC17723B1BCEAFF80E60DC64DE" bold="true" box="[910,966,1972,1997]" pageId="39" pageNumber="40">LAP</emphasis>
). Palatoquadrate (
<emphasis id="7F85EAAC17723B1BC9BBF80E67DB64DE" bold="true" box="[1178,1217,1972,1997]" pageId="39" pageNumber="40">PQ</emphasis>
) smaller and more slender than Meckel's cartilage, presenting a small posterior concavity laterally limited by a small triangular projection. Small ligamentary cartilage (
<emphasis id="7F85EAAC177D3B14CF7DFF2D619963A3" bold="true" box="[604,643,151,176]" pageId="40" pageNumber="41">LC</emphasis>
) present between palatoquadrate antimeres, not fused to antimeres. 
<emphasis id="7F85EAAC177D3B14CDB6FF06626163C7" box="[151,379,188,212]" italics="true" pageId="40" pageNumber="41">Synarcual cartilage.</emphasis>
(
<figureCitation id="D5CA2A3B177D3B14CCABFF0662FC63C6" box="[394,486,188,213]" captionStart="FIGURE 31" captionStartId="40.[151,250,1833,1855]" captionTargetBox="[151,1435,539,1811]" captionTargetId="figure@40.[151,1435,539,1811]" captionTargetPageId="40" captionText="FIGURE 31. Skeletal anatomy (from radiographs) of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Ventral view of anterior disc and jaws. B. Angular cartilages, left side. C. Pectoral girdle, ventral view. D. Tail thorns and clasper skeleton. E. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium." httpUri="https://zenodo.org/record/892813/files/figure.png" pageId="40" pageNumber="41">Figs. 31</figureCitation>
b, c). Anterior synarcual articulates with neurocranium by a central odontoid process (
<emphasis id="7F85EAAC177D3B14CD81FF6563C063EB" bold="true" box="[160,218,223,248]" pageId="40" pageNumber="41">OTP</emphasis>
). Medial crest (
<emphasis id="7F85EAAC177D3B14CCAAFF6562D463EB" bold="true" box="[395,462,223,248]" pageId="40" pageNumber="41">MDC</emphasis>
) extends over entire synarcual. Articular surfaces of scapular processes (
<emphasis id="7F85EAAC177D3B14C9DDFF65662B63EB" bold="true" box="[1276,1329,223,248]" pageId="40" pageNumber="41">ASP</emphasis>
) laterally projected, separated by concavity in between. Anterior articular surface rounded and more prominent then posterior surface; posterior surface with an acute extremity.
</paragraph>
<paragraph id="4D4E36BE177D3B14CDE6FEF6627962F9" blockId="40.[151,1436,151,490]" pageId="40" pageNumber="41">
<emphasis id="7F85EAAC177D3B14CDE6FEF662676277" box="[199,381,332,356]" italics="true" pageId="40" pageNumber="41">Pectoral girdle.</emphasis>
(
<figureCitation id="D5CA2A3B177D3B14CCB0FEF662F26277" box="[401,488,332,357]" captionStart="FIGURE 31" captionStartId="40.[151,250,1833,1855]" captionTargetBox="[151,1435,539,1811]" captionTargetId="figure@40.[151,1435,539,1811]" captionTargetPageId="40" captionText="FIGURE 31. Skeletal anatomy (from radiographs) of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Ventral view of anterior disc and jaws. B. Angular cartilages, left side. C. Pectoral girdle, ventral view. D. Tail thorns and clasper skeleton. E. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium." httpUri="https://zenodo.org/record/892813/files/figure.png" pageId="40" pageNumber="41">Fig. 31</figureCitation>
c). Anterior process of the pectoral girdle robust, posterior process with a small rounded extremity delimiting an adjacent concavity. Scapular processes with a slender medial bar, presenting a central concavity at anterior and posterior margins; lateral portions of scapular processes with a well developed central concavity. Propterygium (
<emphasis id="7F85EAAC177D3B14CF3DFE15614D62DB" bold="true" box="[540,599,431,456]" pageId="40" pageNumber="41">PRO</emphasis>
) robust and elongated. Mesopterygium (
<emphasis id="7F85EAAC177D3B14C918FE15676F62DB" bold="true" box="[1081,1141,431,456]" pageId="40" pageNumber="41">MES</emphasis>
) small and mesocondyle (
<emphasis id="7F85EAAC177D3B14CD81FE6B63C462F9" bold="true" box="[160,222,465,490]" pageId="40" pageNumber="41">MSC</emphasis>
) elongated.
</paragraph>
<caption id="198E6636177D3B14CDB6F89360A764CA" httpUri="https://zenodo.org/record/892813/files/figure.png" pageId="40" pageNumber="41" targetBox="[151,1435,539,1811]" targetPageId="40">
<paragraph id="4D4E36BE177D3B14CDB6F89360A764CA" blockId="40.[151,1435,1833,2009]" pageId="40" pageNumber="41">
<emphasis id="7F85EAAC177D3B14CDB6F8936203642C" bold="true" box="[151,281,1833,1855]" pageId="40" pageNumber="41">FIGURE 31</emphasis>
. Skeletal anatomy (from radiographs) of 
<taxonomicName id="8AF14D3D177D3B14CF9FF89060AA642C" box="[702,944,1834,1855]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="40" pageNumber="41" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC177D3B14CF9FF89060AA642C" box="[702,944,1834,1855]" italics="true" pageId="40" pageNumber="41">Potamotrygon amazona</emphasis>
</taxonomicName>
, 
<emphasis id="7F85EAAC177D3B14CE9FF8936715642C" bold="true" box="[958,1039,1833,1855]" pageId="40" pageNumber="41">
<taxonomicNameLabel id="64B657D7177D3B14CE9FF8936715642C" box="[958,1039,1833,1855]" pageId="40" pageNumber="41" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(MZUSP 117344, adult male, 532 mm DW). 
<emphasis id="7F85EAAC177D3B14CDF7F8F263F2644D" bold="true" box="[214,232,1864,1886]" pageId="40" pageNumber="41">A</emphasis>
. Ventral view of anterior disc and jaws. 
<emphasis id="7F85EAAC177D3B14CFA2F8F2618E644D" bold="true" box="[643,660,1864,1886]" pageId="40" pageNumber="41">B</emphasis>
. Angular cartilages, left side. 
<emphasis id="7F85EAAC177D3B14CEE7F8F260C2644D" bold="true" box="[966,984,1864,1886]" pageId="40" pageNumber="41">C</emphasis>
. Pectoral girdle, ventral view. 
<emphasis id="7F85EAAC177D3B14C831F8F26638644D" bold="true" box="[1296,1314,1864,1886]" pageId="40" pageNumber="41">D</emphasis>
. Tail thorns and clasper skeleton. 
<emphasis id="7F85EAAC177D3B14CC57F8DC629D646F" bold="true" box="[374,391,1894,1916]" pageId="40" pageNumber="41">E</emphasis>
. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: 
<emphasis id="7F85EAAC177D3B14C929F8DC6725646F" bold="true" box="[1032,1087,1894,1916]" pageId="40" pageNumber="41">AAC</emphasis>
, anterior angular cartilage; 
<emphasis id="7F85EAAC177D3B14C87EF8DC668C646F" bold="true" box="[1375,1430,1894,1916]" pageId="40" pageNumber="41">BCO</emphasis>
, coracoid bar; 
<emphasis id="7F85EAAC177D3B14CC11F83F62576488" bold="true" box="[304,333,1925,1947]" pageId="40" pageNumber="41">BP</emphasis>
, basipterigium; 
<emphasis id="7F85EAAC177D3B14CF20F83F61216488" bold="true" box="[513,571,1925,1947]" pageId="40" pageNumber="41">HYO</emphasis>
, hyomandibula; 
<emphasis id="7F85EAAC177D3B14CFD2F83F60326488" bold="true" box="[755,808,1925,1947]" pageId="40" pageNumber="41">LAC</emphasis>
, lateral angular cartilage; 
<emphasis id="7F85EAAC177D3B14C96FF83F67626488" bold="true" box="[1102,1144,1925,1947]" pageId="40" pageNumber="41">MC</emphasis>
, Meckel's cartilage; 
<emphasis id="7F85EAAC177D3B14C87EF83F668C6488" bold="true" box="[1375,1430,1925,1947]" pageId="40" pageNumber="41">MES</emphasis>
, mesopterygium; 
<emphasis id="7F85EAAC177D3B14CC66F81E626564A9" bold="true" box="[327,383,1956,1978]" pageId="40" pageNumber="41">MET</emphasis>
, metapterygium; 
<emphasis id="7F85EAAC177D3B14CF1CF81E616F64A9" bold="true" box="[573,629,1956,1978]" pageId="40" pageNumber="41">MSC</emphasis>
, mesocondyle; 
<emphasis id="7F85EAAC177D3B14CE3EF81E604064A9" bold="true" box="[799,858,1956,1978]" pageId="40" pageNumber="41">MTC</emphasis>
, metacondyle; 
<emphasis id="7F85EAAC177D3B14C921F81E672A64A9" bold="true" box="[1024,1072,1956,1978]" pageId="40" pageNumber="41">PAC</emphasis>
, posterior angular cartilage; 
<emphasis id="7F85EAAC177D3B14C84AF81E668F64A9" bold="true" box="[1387,1429,1956,1978]" pageId="40" pageNumber="41">PIB</emphasis>
, puboischiadic bar; 
<emphasis id="7F85EAAC177D3B14CC76F879626064CA" bold="true" box="[343,378,1987,2009]" pageId="40" pageNumber="41">PQ</emphasis>
, palatoquadrate; 
<emphasis id="7F85EAAC177D3B14CF0BF879614464CA" bold="true" box="[554,606,1987,2009]" pageId="40" pageNumber="41">PRC</emphasis>
, procondyle; 
<emphasis id="7F85EAAC177D3B14CFC8F879600464CA" bold="true" box="[745,798,1987,2009]" pageId="40" pageNumber="41">PRO</emphasis>
, propterygium.
</paragraph>
</caption>
<caption id="198E6636177C3B15CDB6F9F663E965AD" httpUri="https://zenodo.org/record/892815/files/figure.png" pageId="41" pageNumber="42" targetBox="[271,1275,199,1561]" targetPageId="41">
<paragraph id="4D4E36BE177C3B15CDB6F9F663E965AD" blockId="41.[151,1436,1612,1726]" pageId="41" pageNumber="42">
<emphasis id="7F85EAAC177C3B15CDB6F9F662016571" bold="true" box="[151,283,1612,1634]" pageId="41" pageNumber="42">FIGURE 32</emphasis>
. Illustration of the clasper skeleton of 
<emphasis id="7F85EAAC177C3B15CF8EF9F760B06571" box="[687,938,1613,1634]" italics="true" pageId="41" pageNumber="42">
<taxonomicName id="8AF14D3D177C3B15CF8EF9F760BC6571" box="[687,934,1613,1634]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="41" pageNumber="42" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">Potamotrygon amazona</taxonomicName>
,
</emphasis>
<emphasis id="7F85EAAC177C3B15CE93F9F6671E6571" bold="true" box="[946,1028,1612,1634]" pageId="41" pageNumber="42">
<taxonomicNameLabel id="64B657D7177C3B15CE93F9F6671E6571" box="[946,1028,1612,1634]" pageId="41" pageNumber="42" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
(MZUSP 117347, adult male, 560 mm DW). 
<emphasis id="7F85EAAC177C3B15CDF6F9D163F36592" bold="true" box="[215,233,1643,1665]" pageId="41" pageNumber="42">A</emphasis>
. Dorsal view. 
<emphasis id="7F85EAAC177C3B15CC5FF9D162956592" bold="true" box="[382,399,1643,1665]" pageId="41" pageNumber="42">B</emphasis>
. Ventral view. Abbreviations: 
<emphasis id="7F85EAAC177C3B15CFE7F9D161FF6592" bold="true" box="[710,741,1643,1665]" pageId="41" pageNumber="42">AT</emphasis>
, acessory terminal; 
<emphasis id="7F85EAAC177C3B15CE95F9D160C26592" bold="true" box="[948,984,1643,1665]" pageId="41" pageNumber="42">AX</emphasis>
, axial cartilage; 
<emphasis id="7F85EAAC177C3B15C9A2F9D167BF6592" bold="true" box="[1155,1189,1643,1665]" pageId="41" pageNumber="42">BE</emphasis>
, beta cartilage; 
<emphasis id="7F85EAAC177C3B15C869F9D1667F6592" bold="true" box="[1352,1381,1643,1665]" pageId="41" pageNumber="42">B1</emphasis>
, first basal segment; 
<emphasis id="7F85EAAC177C3B15CC16F933624E658C" bold="true" box="[311,340,1673,1695]" pageId="41" pageNumber="42">B2</emphasis>
, second basal segment; 
<emphasis id="7F85EAAC177C3B15CF70F9336161658C" bold="true" box="[593,635,1673,1695]" pageId="41" pageNumber="42">DM</emphasis>
, dorsal marginal; 
<emphasis id="7F85EAAC177C3B15CE18F9336072658C" bold="true" box="[825,872,1673,1695]" pageId="41" pageNumber="42">DT2</emphasis>
, dorsal terminal 2; 
<emphasis id="7F85EAAC177C3B15C917F933677A658C" bold="true" box="[1078,1120,1673,1695]" pageId="41" pageNumber="42">VM</emphasis>
, ventral marginal; 
<emphasis id="7F85EAAC177C3B15C807F933665D658C" bold="true" box="[1318,1351,1673,1695]" pageId="41" pageNumber="42">VT</emphasis>
, ventral terminal.
</paragraph>
</caption>
<paragraph id="4D4E36BE177C3B15CDE6F95C61A2649D" blockId="41.[151,1437,1765,2007]" pageId="41" pageNumber="42">
<emphasis id="7F85EAAC177C3B15CDE6F95C627365ED" box="[199,361,1766,1790]" italics="true" pageId="41" pageNumber="42">Pelvic girdle.</emphasis>
(
<figureCitation id="D5CA2A3B177C3B15CCA5F95F62F865ED" box="[388,482,1765,1790]" captionStart="FIGURE 31" captionStartId="40.[151,250,1833,1855]" captionTargetBox="[151,1435,539,1811]" captionTargetId="figure@40.[151,1435,539,1811]" captionTargetPageId="40" captionText="FIGURE 31. Skeletal anatomy (from radiographs) of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Ventral view of anterior disc and jaws. B. Angular cartilages, left side. C. Pectoral girdle, ventral view. D. Tail thorns and clasper skeleton. E. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium." httpUri="https://zenodo.org/record/892813/files/figure.png" pageId="41" pageNumber="42">Fig. 31</figureCitation>
e). Prepelvic process (
<emphasis id="7F85EAAC177C3B15CFDDF95F603565ED" bold="true" box="[764,815,1765,1790]" pageId="41" pageNumber="42">PPP</emphasis>
) very elongated, almost reaching pectoral girdle. Pubosquiadic bar (
<emphasis id="7F85EAAC177C3B15CC55F8B362B96431" bold="true" box="[372,419,1801,1826]" pageId="41" pageNumber="42">PIB</emphasis>
) slender, with expanded extremities. Lateral prepelvic processes (
<emphasis id="7F85EAAC177C3B15C996F8B367F66431" bold="true" box="[1207,1260,1801,1826]" pageId="41" pageNumber="42">LPP</emphasis>
) subtriangular, positioned anteriorly. Laterally positioned, robust iliac processes (
<emphasis id="7F85EAAC177C3B15CE57F89760886455" bold="true" box="[886,914,1837,1862]" pageId="41" pageNumber="42">IP</emphasis>
) presenting a single round posterior expansion and a straight anterior one. Isquial processes (
<emphasis id="7F85EAAC177C3B15CF91F8EB61C66479" bold="true" box="[688,732,1873,1898]" pageId="41" pageNumber="42">ISP</emphasis>
) slender, set more medially, and projecting posteriorly. Four relatively large obturator foramina (
<emphasis id="7F85EAAC177C3B15CF08F8CF614A649D" bold="true" box="[553,592,1909,1934]" pageId="41" pageNumber="42">OF</emphasis>
) present.
</paragraph>
<paragraph id="4D4E36BE177C3B16CDE6F82060EE629B" blockId="41.[151,1437,1765,2007]" lastBlockId="42.[151,1437,151,861]" lastPageId="42" lastPageNumber="43" pageId="41" pageNumber="42">
<emphasis id="7F85EAAC177C3B15CDE6F820629464A1" box="[199,398,1946,1970]" italics="true" pageId="41" pageNumber="42">Clasper skeleton.</emphasis>
(
<figureCitation id="D5CA2A3B177C3B15CC80F823611B64A1" box="[417,513,1945,1970]" captionStart="FIGURE 31" captionStartId="40.[151,250,1833,1855]" captionTargetBox="[151,1435,539,1811]" captionTargetId="figure@40.[151,1435,539,1811]" captionTargetPageId="40" captionText="FIGURE 31. Skeletal anatomy (from radiographs) of Potamotrygon amazona, sp. nov. (MZUSP 117344, adult male, 532 mm DW). A. Ventral view of anterior disc and jaws. B. Angular cartilages, left side. C. Pectoral girdle, ventral view. D. Tail thorns and clasper skeleton. E. Pelvic girdle and clasper. Scale bar: 10 mm. Abbreviations: AAC, anterior angular cartilage; BCO, coracoid bar; BP, basipterigium; HYO, hyomandibula; LAC, lateral angular cartilage; MC, Meckel's cartilage; MES, mesopterygium; MET, metapterygium; MSC, mesocondyle; MTC, metacondyle; PAC, posterior angular cartilage; PIB, puboischiadic bar; PQ, palatoquadrate; PRC, procondyle; PRO, propterygium." httpUri="https://zenodo.org/record/892813/files/figure.png" pageId="41" pageNumber="42">Figs. 31</figureCitation>
d, 32). Basal segment 1 (
<emphasis id="7F85EAAC177C3B15CE0AF823605664A1" bold="true" box="[811,844,1945,1970]" pageId="41" pageNumber="42">B1</emphasis>
) with a wider anterior margin; both margins oval. Subcylindrical basal segment 2 (
<emphasis id="7F85EAAC177C3B15CF35F807612F64C5" bold="true" box="[532,565,1981,2006]" pageId="41" pageNumber="42">B2</emphasis>
) with a concavity on its ventral wall. Both basal segments about equal in length, but segment 2 more slender. Axial cartilage (
<emphasis id="7F85EAAC177F3B16CFDEFF2D603D63A3" bold="true" box="[767,807,151,176]" pageId="42" pageNumber="43">AX</emphasis>
) elongated, cylindrical and robust, curved posteriorly, narrowing toward extremity. Ventral marginal cartilage oval (
<emphasis id="7F85EAAC177F3B16CE75FF06609863C6" bold="true" box="[852,898,188,213]" pageId="42" pageNumber="43">VM</emphasis>
), ventrally curved. Beta cartilage (
<emphasis id="7F85EAAC177F3B16C835FF06662363C6" bold="true" box="[1300,1337,188,213]" pageId="42" pageNumber="43">BE</emphasis>
) slender and cylindrical, slightly dorsally curved, articulating with the wall of basal segment 1. Dorsal marginal cartilage (
<emphasis id="7F85EAAC177F3B16CD81FEBE63D5620E" bold="true" box="[160,207,260,285]" pageId="42" pageNumber="43">DM</emphasis>
) well developed and oval, about 1/4 of clasper length, curved medially. Dorsal terminal 2 (
<emphasis id="7F85EAAC177F3B16C9E4FEBE67E1620E" bold="true" box="[1221,1275,260,285]" pageId="42" pageNumber="43">DT2</emphasis>
) oval, slightly slender and curved. Terminal accessory (
<emphasis id="7F85EAAC177F3B16CF42FE9D619C6253" bold="true" box="[611,646,295,320]" pageId="42" pageNumber="43">TA</emphasis>
) cartilage slender and straight, with a narrow, curved anterior margin. Ventral terminal cartilage (
<emphasis id="7F85EAAC177F3B16CCF5FEF662E16276" bold="true" box="[468,507,332,357]" pageId="42" pageNumber="43">VT</emphasis>
) well developed, about 1/3 of clasper length, being the most robust posterior element; ventral terminal with a triangular posterior portion, curved dorsally.
</paragraph>
<paragraph id="4D4E36BE177F3B16CDE6FE2E60BB610B" blockId="42.[151,1437,151,861]" pageId="42" pageNumber="43">
<emphasis id="7F85EAAC177F3B16CDE6FE2E62F162BE" bold="true" box="[199,491,404,429]" pageId="42" pageNumber="43">Geographic distribution</emphasis>
. 
<taxonomicName id="8AF14D3D177F3B16CCDCFE2F601462BF" box="[509,782,405,428]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="42" pageNumber="43" phylum="Chordata" rank="species" species="amazona">
<emphasis id="7F85EAAC177F3B16CCDCFE2F601462BF" box="[509,782,405,428]" italics="true" pageId="42" pageNumber="43">Potamotrygon amazona</emphasis>
</taxonomicName>
is described primarily from the rio Jutaí basin, state of Amazonas, Brazil (
<figureCitation id="D5CA2A3B177F3B16CC52FE0D62D362C3" box="[371,457,439,464]" captionStart="FIGURE 43" captionStartId="53.[151,250,1668,1690]" captionTargetBox="[151,1435,735,1647]" captionTargetId="figure@53.[151,1435,735,1647]" captionTargetPageId="53" captionText="FIGURE 43. Distribution of species of the Potamotrygon scobina complex. Red circle: Potamotrygon scobina; red star: type locality of Potamotrygon scobina; purple diamond: Potamotrygon limai; yellow pentagon: Potamotrygon adamastor, sp. nov.; blue square: Potamotrygon amazona, sp. nov.; green triangle: Potamotrygon garmani, sp. nov." httpUri="https://zenodo.org/record/892837/files/figure.png" pageId="42" pageNumber="43">Fig. 43</figureCitation>
), but other specimens identified as 
<taxonomicName id="8AF14D3D177F3B16CE42FE0360FF62C3" box="[867,997,441,464]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="42" pageNumber="43" phylum="Chordata" rank="species" species="amazona">
<emphasis id="7F85EAAC177F3B16CE42FE0360FF62C3" box="[867,997,441,464]" italics="true" pageId="42" pageNumber="43">P. amazona</emphasis>
</taxonomicName>
are known from rio Branco (Roraima state) and rio Juruá. However, these localities may be innacurate, especially the latter as the specimens examined had poorly preserved tags and lack more precise locality information.
</paragraph>
</subSubSection>
<subSubSection id="05EB6535177F3B16CDE6FD9E67346173" pageId="42" pageNumber="43" type="etymology">
<paragraph id="4D4E36BE177F3B16CDE6FD9E67346173" blockId="42.[151,1437,151,861]" pageId="42" pageNumber="43">
<emphasis id="7F85EAAC177F3B16CDE6FD9E625C612E" bold="true" box="[199,326,548,573]" pageId="42" pageNumber="43">Etymology</emphasis>
. 
<taxonomicName id="8AF14D3D177F3B16CC79FD9F6173612F" box="[344,617,549,572]" class="Elasmobranchii" family="Potamotrygonidae" genus="Potamotrygon" kingdom="Animalia" order="Myliobatiformes" pageId="42" pageNumber="43" phylum="Chordata" rank="species" species="amazona" status="sp. nov.">
<emphasis id="7F85EAAC177F3B16CC79FD9F6173612F" box="[344,617,549,572]" italics="true" pageId="42" pageNumber="43">Potamotrygon amazona</emphasis>
</taxonomicName>
<emphasis id="7F85EAAC177F3B16CF55FD9E61C8612E" bold="true" box="[628,722,548,573]" pageId="42" pageNumber="43">
<taxonomicNameLabel id="64B657D7177F3B16CF55FD9E61C8612E" box="[628,722,548,573]" pageId="42" pageNumber="43" rank="species">sp. nov.</taxonomicNameLabel>
</emphasis>
is named after the female warriors of Greek mythology, the Amazons, daughters of the god of war and goddess of harmony. Gender feminine.
</paragraph>
</subSubSection>
<subSubSection id="05EB6535177F3B16CDE6FDD66170604E" pageId="42" pageNumber="43" type="materials_examined">
<paragraph id="4D4E36BE177F3B16CDE6FDD66170604E" blockId="42.[151,1437,151,861]" pageId="42" pageNumber="43">
<materialsCitation id="FD993CE3177F3B16CDE6FDD6629761DF" ID-GBIF-Occurrence="1586248271" collectingDate="2012-09" collectionCode="MZUSP" collectorName="F. Marques" country="Brazil" latitude="-2.9235556" location="rio Jutai" longLatPrecision="1" longitude="-66.95211" pageId="42" pageNumber="43" specimenCode="MZUSP 117347" specimenCount="6" stateProvince="Amazonas">
<emphasis id="7F85EAAC177F3B16CDE6FDD662A96196" bold="true" box="[199,435,620,645]" pageId="42" pageNumber="43">Additional material</emphasis>
. (
<specimenCount id="5BF7FD37177F3B16CCEAFDD661466196" box="[459,604,620,645]" pageId="42" pageNumber="43" type="generic">6 specimens</specimenCount>
). 
<specimenCode id="1D579EC5177F3B16CF4EFDD660326197" box="[623,808,620,644]" collectionCode="MZUSP" country="Brazil" httpUri="http://grbio.org/cool/6yx0-3nm7" name="Museu de Zoologia da Universidade de Sao Paulo" pageId="42" pageNumber="43">MZUSP 117347</specimenCode>
(adult male, 
<quantity id="8A099B5B177F3B16CE9FFDD667066197" box="[958,1052,620,645]" metricMagnitude="-1" metricUnit="m" metricValue="5.6" pageId="42" pageNumber="43" unit="mm" value="560.0">560 mm</quantity>
DW), 
<location id="482E6065177F3B16C94AFDD667D06197" LSID="urn:lsid:plazi:treatment:C55887A817753B16CDB6FDFD6170604E:482E6065177F3B16C94AFDD667D06197" box="[1131,1226,620,645]" country="Brazil" latitude="-2.9235556" longLatPrecision="1" longitude="-66.95211" name="rio Jutai" pageId="42" pageNumber="43" stateProvince="Amazonas">rio Jutaí</location>
, municipal district of Boca do Titica, upper Amazon Basin, state of 
<collectingRegion id="8F35F85C177F3B16CFE1FD2A602361BB" box="[704,825,656,680]" country="Brazil" name="Amazonas" pageId="42" pageNumber="43">Amazonas</collectingRegion>
, 
<collectingCountry id="35E6762E177F3B16CE64FD35609661BB" box="[837,908,655,680]" name="Brazil" pageId="42" pageNumber="43">Brazil</collectingCountry>
, 
<geoCoordinate id="28C55079177F3B16CEB9FD35673E61BB" box="[920,1060,655,680]" direction="south" orientation="latitude" pageId="42" pageNumber="43" precision="1" value="-2.9235556">2°55’24.8”S</geoCoordinate>
, 
<geoCoordinate id="28C55079177F3B16C911FD3567C861BB" box="[1072,1234,655,680]" direction="west" orientation="longitude" pageId="42" pageNumber="43" precision="1" value="-66.95211">66°57’07.6”W</geoCoordinate>
, 
<date id="394F107E177F3B16C9FFFD35668261BB" box="[1246,1432,655,680]" pageId="42" pageNumber="43" value="2012-09">
<collectingDate id="290BE996177F3B16C9FFFD35668261BB" box="[1246,1432,655,680]" pageId="42" pageNumber="43" value="2012-09">September 2012</collectingDate>
</date>
, coll. 
<collectorName id="E0045368177F3B16CDEEFD0F625761DF" box="[207,333,693,716]" pageId="42" pageNumber="43">F. Marques</collectorName>
<emphasis id="7F85EAAC177F3B16CC75FD0F629F61DF" box="[340,389,692,716]" italics="true" pageId="42" pageNumber="43">et al</emphasis>
.
</materialsCitation>
; 
<materialsCitation id="FD993CE3177F3B16CCBDFD0E679A61DF" ID-GBIF-Occurrence="1586248273" box="[412,1152,692,717]" collectingDate="2012-09" collectionCode="MZUSP" collectorName="F. Marques" country="Brazil" latitude="-2.9235556" location="rio Jutai" longLatPrecision="1" longitude="-66.95211" pageId="42" pageNumber="43" specimenCode="MZUSP 117345" specimenCount="1" stateProvince="Amazonas">
<specimenCode id="1D579EC5177F3B16CCBDFD0E614E61DE" box="[412,596,692,717]" collectionCode="MZUSP" country="Brazil" httpUri="http://grbio.org/cool/6yx0-3nm7" name="Museu de Zoologia da Universidade de Sao Paulo" pageId="42" pageNumber="43">MZUSP 117345</specimenCode>
(adult male, 
<quantity id="8A099B5B177F3B16CFC8FD0E605C61DF" box="[745,838,692,717]" metricMagnitude="-1" metricUnit="m" metricValue="5.84" pageId="42" pageNumber="43" unit="mm" value="584.0">584 mm</quantity>
DW), same data as 117347
</materialsCitation>
; 
<materialsCitation id="FD993CE3177F3B16C9ADFD0E60AD61E3" ID-GBIF-Occurrence="1586248253" collectionCode="INPA" country="Brazil" county="Uacari" location="rio Jurua" municipality="Boca do Anaxaqui" pageId="42" pageNumber="43" specimenCount="1" stateProvince="Amazonas">
<collectionCode id="2BE0AE7B177F3B16C9ADFD0E67D161DF" box="[1164,1227,692,716]" country="Brazil" httpUri="http://grbio.org/cool/rm88-499z" name="Instituto Nacional de Pesquisas da Amazonia" pageId="42" pageNumber="43">INPA</collectionCode>
uncat. (“no tag1”) (juvenile male, 
<quantity id="8A099B5B177F3B16CC6BFD6D62B361FC" box="[330,425,727,752]" metricMagnitude="-1" metricUnit="m" metricValue="4.65" pageId="42" pageNumber="43" unit="mm" value="465.0">465 mm</quantity>
DW), 
<location id="482E6065177F3B16CCD8FD6D617A61E3" LSID="urn:lsid:plazi:treatment:C55887A817753B16CDB6FDFD6170604E:482E6065177F3B16CCD8FD6D617A61E3" box="[505,608,727,752]" country="Brazil" county="Uacari" municipality="Boca do Anaxaqui" name="rio Jurua" pageId="42" pageNumber="43" stateProvince="Amazonas">rio Juruá</location>
, &quot; 
<collectingMunicipality id="AD2AACC4177F3B16CF57FD62604A61E3" box="[630,848,727,752]" pageId="42" pageNumber="43">Boca do Anaxaqui</collectingMunicipality>
, 
<collectingCounty id="A42F4E32177F3B16CE7CFD6D60B461E3" box="[861,942,727,752]" pageId="42" pageNumber="43">Uacari</collectingCounty>
&quot;
</materialsCitation>
; 
<materialsCitation id="FD993CE3177F3B16CEE5FD62617B6007" ID-GBIF-Occurrence="1586248272" collectionCode="INPA" country="Brazil" county="Uacari" location="rio Jurua" municipality="Boca do Anaxaqui" pageId="42" pageNumber="43" specimenCount="1" stateProvince="Amazonas">
<collectionCode id="2BE0AE7B177F3B16CEE5FD62671961E3" box="[964,1027,728,752]" country="Brazil" httpUri="http://grbio.org/cool/rm88-499z" name="Instituto Nacional de Pesquisas da Amazonia" pageId="42" pageNumber="43">INPA</collectionCode>
uncat. (“no tag2”) (adult male, 
<quantity id="8A099B5B177F3B16C853FD6D63D96007" metricMagnitude="-1" metricUnit="m" metricValue="5.25" pageId="42" pageNumber="43" unit="mm" value="525.0">525 mm</quantity>
DW), same data as 
<collectionCode id="2BE0AE7B177F3B16CC8BFD4662F36007" box="[426,489,764,788]" country="Brazil" httpUri="http://grbio.org/cool/rm88-499z" name="Instituto Nacional de Pesquisas da Amazonia" pageId="42" pageNumber="43">INPA</collectionCode>
“no tag1”
</materialsCitation>
; 
<materialsCitation id="FD993CE3177F3B16CF4FFD466212602B" ID-GBIF-Occurrence="1586248280" collectionCode="INPA" country="Brazil" county="Uacari" location="rio Jurua" municipality="Boca do Anaxaqui" pageId="42" pageNumber="43" specimenCount="1" stateProvince="Amazonas">
<collectionCode id="2BE0AE7B177F3B16CF4FFD4661B76007" box="[622,685,764,788]" country="Brazil" httpUri="http://grbio.org/cool/rm88-499z" name="Instituto Nacional de Pesquisas da Amazonia" pageId="42" pageNumber="43">INPA</collectionCode>
uncat. (“no tag3”) (adult male, 
<quantity id="8A099B5B177F3B16C939FD46676C6007" box="[1048,1142,764,789]" metricMagnitude="-1" metricUnit="m" metricValue="5.31" pageId="42" pageNumber="43" unit="mm" value="531.0">531 mm</quantity>
DW), same data as 
<collectionCode id="2BE0AE7B177F3B16C87CFD4666866007" box="[1373,1436,764,788]" country="Brazil" httpUri="http://grbio.org/cool/rm88-499z" name="Instituto Nacional de Pesquisas da Amazonia" pageId="42" pageNumber="43">INPA</collectionCode>
“no tag1”
</materialsCitation>
; 
<materialsCitation id="FD993CE3177F3B16CC36FC9A6170604E" ID-GBIF-Occurrence="1586248263" collectionCode="INPA" country="Brazil" latitude="-1.3961111" location="rio Branco" longLatPrecision="21" longitude="-61.844444" municipality="Comunidade Sacai" pageId="42" pageNumber="43" specimenCode="INPA 7911" specimenCount="1" stateProvince="Roraima">
<specimenCode id="1D579EC5177F3B16CC36FC9A628D602B" box="[279,407,800,824]" collectionCode="INPA" country="Brazil" httpUri="http://grbio.org/cool/rm88-499z" name="Instituto Nacional de Pesquisas da Amazonia" pageId="42" pageNumber="43">INPA 7911</specimenCode>
(adult male, 
<quantity id="8A099B5B177F3B16CF12FCA561896024" box="[563,659,799,824]" metricMagnitude="-1" metricUnit="m" metricValue="5.24" pageId="42" pageNumber="43" unit="mm" value="524.0">524 mm</quantity>
DW), 
<location id="482E6065177F3B16CFC4FCA5607B6024" LSID="urn:lsid:plazi:treatment:C55887A817753B16CDB6FDFD6170604E:482E6065177F3B16CFC4FCA5607B6024" box="[741,865,799,824]" country="Brazil" latitude="-1.3961111" longLatPrecision="21" longitude="-61.844444" municipality="Comunidade Sacai" name="rio Branco" pageId="42" pageNumber="43" stateProvince="Roraima">rio Branco</location>
, municipal district of 
<collectingMunicipality id="AD2AACC4177F3B16C940FCA56623602B" box="[1121,1337,799,824]" pageId="42" pageNumber="43">Comunidade Sacaí</collectingMunicipality>
, state of 
<collectingRegion id="8F35F85C177F3B16CDB6FCFE63E0604E" box="[151,250,836,861]" country="Brazil" name="Roraima" pageId="42" pageNumber="43">Roraima</collectingRegion>
, 
<collectingCountry id="35E6762E177F3B16CC24FCFE6256604E" box="[261,332,836,861]" name="Brazil" pageId="42" pageNumber="43">Brazil</collectingCountry>
, 
<geoCoordinate id="28C55079177F3B16CC79FCFE62D4604E" box="[344,462,836,861]" direction="south" orientation="latitude" pageId="42" pageNumber="43" precision="15" value="-1.3961111">1°23’46”S</geoCoordinate>
, 
<geoCoordinate id="28C55079177F3B16CCFBFCFE617D604E" box="[474,615,836,861]" direction="west" orientation="longitude" pageId="42" pageNumber="43" precision="15" value="-61.844444">61°50’40&quot;W</geoCoordinate>
.
</materialsCitation>
</paragraph>
</subSubSection>
</treatment>
</document>