179 lines
27 KiB
XML
179 lines
27 KiB
XML
<document id="648410623E6AE397AABD1CB67E4CBDAA" ID-DOI="10.5252/geodiversitas2019v41a7" ID-GBIF-Dataset="175f115f-a52b-4b98-b183-5f3054a9ba64" ID-ISSN="1638-9395" ID-Zenodo-Dep="3699968" ID-ZooBank="urn:lsid:zoobank.org:pub:58412891-24D4-40B0-B74A-3D9743A140B8" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="felipe" IM.treatments_approvedBy="felipe" checkinTime="1583514998434" checkinUser="valdenar" docAuthor="Guinot, Danièle, Carbot-Chanona, Gerardo & Vega, Francisco J." docDate="2019" docId="038E3408FFF0CB1A47DEF914D624FD48" docLanguage="en" docName="GEODIVERSITAS.41.7.285-322.pdf.imf" docOrigin="Geodiversitas 41 (7)" docStyle="DocumentStyle:F830B10FF475E64C1F1601E3B32DDC00.4:Geodiversitas.2018-.journal_article" docStyleId="F830B10FF475E64C1F1601E3B32DDC00" docStyleName="Geodiversitas.2018-.journal_article" docStyleVersion="4" docTitle="Archaeochiapasa mardoqueoi Guinot, Carbot-Chanona & Vega 2019" docType="treatment" docVersion="5" lastPageNumber="294" masterDocId="FFB74C70FFFACB114700FFC7D37EFFFA" masterDocTitle="Archaeochiapasidae n. fam., a new early Cenomanian brachyuran family from Chiapas, Mexico, new hypothesis on Lecythocaridae Schweitzer & Feldmann, 2009, and phylogenetic implications (Crustacea, Decapoda, Brachyura, Eubrachyura)" masterLastPageNumber="322" masterPageNumber="285" pageNumber="293" updateTime="1698725880851" updateUser="plazi" zenodo-license-document="CC0-1.0" zenodo-license-figures="CC0-1.0">
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<mods:title id="068BEAAFCE4094D3A9230025C67FAC8A">Archaeochiapasidae n. fam., a new early Cenomanian brachyuran family from Chiapas, Mexico, new hypothesis on Lecythocaridae Schweitzer & Feldmann, 2009, and phylogenetic implications (Crustacea, Decapoda, Brachyura, Eubrachyura)</mods:title>
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<mods:roleTerm id="C7EED0161666AEABD378E865FDAF572D">Author</mods:roleTerm>
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<mods:namePart id="236F2963A27AD46776277E5E1B0AC9C5">Guinot, Danièle</mods:namePart>
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<mods:roleTerm id="1F2D44EF10684A5BAAE601F38AB9A11D">Author</mods:roleTerm>
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<mods:namePart id="4CAEE23EF51610DD6168842D7854AB02">Carbot-Chanona, Gerardo</mods:namePart>
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<mods:name id="EE0ECBDD4491AC7BBEB5D60272E9F7B0" type="personal">
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<mods:roleTerm id="FAD2F1AF5035801123713A24E82492F4">Author</mods:roleTerm>
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<mods:namePart id="D5D6A6D2E7186BE493518AB2E0711742">Vega, Francisco J.</mods:namePart>
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<mods:typeOfResource id="F8DC0FA7BAB1365C6C7DF5C316AB7363">text</mods:typeOfResource>
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<mods:title id="3F07F40907E95B4ACCB5448967A7B5D4">Geodiversitas</mods:title>
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<mods:part id="1C9660FDD8BC94819933171BD2062047">
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<mods:date id="7B3C6F560388670B79EAF091EF084ECC">2019</mods:date>
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<mods:number id="6F5A4D426ECB1DED9DD9090A2B7CA06A">2019-03-28</mods:number>
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<mods:number id="0094BAAB92734EEFA4BBAECEAE422CE6">41</mods:number>
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<treatment id="038E3408FFF0CB1A47DEF914D624FD48" ID-GBIF-Taxon="162463456" LSID="urn:lsid:plazi:treatment:038E3408FFF0CB1A47DEF914D624FD48" httpUri="http://treatment.plazi.org/id/038E3408FFF0CB1A47DEF914D624FD48" lastPageId="11" lastPageNumber="294" pageId="10" pageNumber="293">
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<paragraph id="8B98851EFFF0CB1B47DEF914D17FF8F4" blockId="10.[222,686,1747,1807]" pageId="10" pageNumber="293">
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<subSubSection id="C33DD695FFF0CB1B47DEF914D1D0F914" box="[222,686,1747,1774]" pageId="10" pageNumber="293" type="nomenclature">
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<heading id="D0D03272FFF0CB1B47DEF914D1D0F914" box="[222,686,1747,1774]" pageId="10" pageNumber="293">
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<taxonomicName id="4C27FE9DFFF0CB1B47DEF914D165F914" ID-CoL="2cb98e04-6d49-4adc-91f8-ebf2ab8800c5" authority="Guinot, Carbot-Chanona & Vega, 2019" authorityName="Guinot, Carbot-Chanona & Vega" authorityYear="2019" box="[222,539,1747,1774]" class="Malacostraca" family="Archaeochiapasidae" genus="Archaeochiapasa" higherTaxonomySource="CoL" kingdom="Animalia" order="Decapoda" pageId="10" pageNumber="293" phylum="Arthropoda" rank="species" species="mardoqueoi">
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<emphasis id="B953590CFFF0CB1B47DEF914D165F914" bold="true" box="[222,539,1747,1774]" italics="true" pageId="10" pageNumber="293">Archaeochiapasa mardoqueoi</emphasis>
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</taxonomicName>
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n. gen, n. sp.
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</heading>
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</subSubSection>
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<subSubSection id="C33DD695FFF0CB1B468AF933D17FF8F4" box="[394,513,1780,1807]" pageId="10" pageNumber="293" type="description">
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(
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<figureCitation id="131C999BFFF0CB1B4691F933D286F8F4" box="[401,504,1780,1807]" captionStart-0="FIG" captionStart-1="FIG" captionStart-2="FIG" captionStart-3="FIG" captionStart-4="FIG" captionStart-5="FIG" captionStart-6="FIG" captionStart-7="FIG" captionStartId-0="10.[132,143,1467,1485]" captionStartId-1="12.[132,143,1591,1609]" captionStartId-2="14.[132,143,1420,1438]" captionStartId-3="16.[132,143,1492,1510]" captionStartId-4="18.[132,142,1841,1859]" captionStartId-5="20.[132,143,1987,2005]" captionStartId-6="21.[132,143,1293,1311]" captionStartId-7="22.[132,143,1941,1959]" captionTargetBox-0="[283,1304,215,1423]" captionTargetBox-1="[160,1427,215,1546]" captionTargetBox-2="[132,1455,215,1375]" captionTargetBox-3="[132,1455,215,1448]" captionTargetBox-4="[132,1455,215,1811]" captionTargetBox-5="[132,1455,215,1954]" captionTargetBox-6="[132,1455,215,1248]" captionTargetBox-7="[132,1455,215,1909]" captionTargetId-0="figure@10.[283,1305,215,1423]" captionTargetId-1="figure@12.[702,1247,784,1356]" captionTargetId-2="figure@14.[132,1455,214,1375]" captionTargetId-3="figure@16.[132,1455,215,1448]" captionTargetId-4="figure@18.[698,1267,777,1343]" captionTargetId-5="figure@20.[698,1267,763,1314]" captionTargetId-6="figure@21.[132,1455,214,1248]" captionTargetId-7="figure@22.[132,1455,215,1954]" captionTargetPageId-0="10" captionTargetPageId-1="12" captionTargetPageId-2="14" captionTargetPageId-3="16" captionTargetPageId-4="18" captionTargetPageId-5="20" captionTargetPageId-6="21" captionTargetPageId-7="22" captionText-0="FIG. 5. — Archaeochiapasa mardoqueoi n. gen., n. sp., holotype, male Chiapas, El Chango quarry, lower Cenomanian Cintalapa Member of the Sierra Madre Formation (IHNFG-5616): A, specimen whitened with ammonium chloride; B, specimen submerged in water. See first three dorsally positioned pleonal somites, extremely long P2, P3, and a reduced last pereiopod, P4 or P5. Scale bar: A, B, 0.5 cm." captionText-1="FIG. 6. — Archaeochiapasa mardoqueoi n. gen., n. sp. holotype, male (IHNFG-5616). A, specimen photographed in situ at El Chango quarry; B-D, steinkern (counterpart):B, illuminated with oblique yellow light; C, illuminated with incident light and coated with ammonium chloride;D, illuminated with oblique, blue light and submerged in water. Scale bars: A, 1 cm; B-D, 5 mm." captionText-2="FIG. 7. — Archaeochiapasa mardoqueoi n. gen.,n. sp., Chiapas,El Chango quarry,lower Cenomanian Cintalapa Member of Sierra Madre Formation,G.Carbot-Chanona coll., holotype, male, 10.3 × 11.1 mm (IHNFG-5616): dorsal view, with proximal part of pleon (actually a1-a3) dorsally visible. Abbreviations: a1, pleonal somite 1; fl, flange; p.c., concave posterior border of carapace; r, thickened carapace border. Scale bar: 5 mm." captionText-3="FIG. 8. — Archaeochiapasa mardoqueoi n. gen., n. sp., male 10.3 × 11.1 mm, holotype (IHNFG-5616): superposition of the decorticated crab carapace and the counterpart with cuticle to show ornamentation of dorsal surface. Abbreviation: fl, flange. Scale bar: 5 mm." captionText-4="FIG. 9. — Archaeochiapasa mardoqueoi n. gen.,n. sp.,male 10.3 × 11.1 mm,holotype (IHNFG-5616):A, close-up of front and rostrum;B, close-up of posterior portion of carapace.Abbreviations:a1-a3, pleonal somites 1-3; p.c., concave posterior border of carapace; P, reduced P4 or P5; ro, rostrum.Scale bars:A,2 mm; B, 2.5 mm." captionText-5="FIG. 10. — Archaeochiapasa mardoqueoi n. gen., n. sp., male 10.3 × 11.1 mm, holotype (IHNFG-5616): A, close-up of mxp3, with developed exopodite; B, C, left and right chelipeds. Abbreviations: ex, exopodite; i, endopodite ischion; m, endopodite merus; t.s., thoracic sternum. Scale bars: A, 1 mm; B, C, 2 mm." captionText-6="FIG. 11. — Archaeochiapasa mardoqueoi n. gen.,n. sp., male 10.3 × 11.1 mm, holotype (IHNFG-5616): thoracic sternum and pleon. Abbreviations:a4-a6, pleonal somites 4-6; t, telson; 3-8, thoracic sternites 3-8; 4/5, 5/6, 7/8, sternal sutures 4/5, 5/6, 7/8. Scale bar: 3 mm." captionText-7="FIG. 12. — Archaeochiapasa mardoqueoi n. gen., n. sp., male 10.3 × 11.1 mm, holotype (IHNFG-5616), close-up of pleon: A, first three somites (a1-a3) in dorsal position; B, last somites plus telson; C, close-up of posterior portion of carapace, with first three pleonal somites and reduced P4 or P5. Abbreviations: a1- a3, pleonal somites a1-a3 in dorsal position; a4-a6, pleonal somites 4-6, ventrally folded; b.p., location of pleonal socket covering sternal press-button;fl, flange; P, P4 or P5; r, thickened carapace border; t, telson. Scale bars: A, 2 mm; B, 1 mm; C, 3 mm." figureDoi-0="http://doi.org/10.5281/zenodo.3699979" figureDoi-1="http://doi.org/10.5281/zenodo.3699981" figureDoi-2="http://doi.org/10.5281/zenodo.3699983" figureDoi-3="http://doi.org/10.5281/zenodo.3699985" figureDoi-4="http://doi.org/10.5281/zenodo.3699987" figureDoi-5="http://doi.org/10.5281/zenodo.3699989" figureDoi-6="http://doi.org/10.5281/zenodo.3699991" figureDoi-7="http://doi.org/10.5281/zenodo.3699993" httpUri-0="https://zenodo.org/record/3699979/files/figure.png" httpUri-1="https://zenodo.org/record/3699981/files/figure.png" httpUri-2="https://zenodo.org/record/3699983/files/figure.png" httpUri-3="https://zenodo.org/record/3699985/files/figure.png" httpUri-4="https://zenodo.org/record/3699987/files/figure.png" httpUri-5="https://zenodo.org/record/3699989/files/figure.png" httpUri-6="https://zenodo.org/record/3699991/files/figure.png" httpUri-7="https://zenodo.org/record/3699993/files/figure.png" pageId="10" pageNumber="293">Figs 5-12</figureCitation>
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)
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</subSubSection>
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</paragraph>
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<paragraph id="8B98851EFFF0CB1B478EF8EBD183F8BA" box="[142,765,1836,1856]" pageId="10" pageNumber="293">urn:lsid:zoobank.org:act:A95A8701-7B0F-4790-AB45-5070B93F8E07</paragraph>
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<subSubSection id="C33DD695FFF0CB1B4784F8ADD28BF816" pageId="10" pageNumber="293" type="reference_group">
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<paragraph id="8B98851EFFF0CB1B4784F8ADD28BF816" blockId="10.[132,776,1898,2029]" pageId="10" pageNumber="293">
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TYPE MATERIAL. —
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<materialsCitation id="3B4F8F43FFF0CB1B4644F8ACD28BF816" ID-GBIF-Occurrence="2574964601" collectingDate="2018-03-14" location="Gerardo Carbot-Chanona" pageId="10" pageNumber="293" specimenCount="2" specimenCount-male="1" typeStatus="holotype">
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<typeStatus id="549C3BBCFFF0CB1B4644F8ACD2DFF879" box="[324,417,1899,1923]" pageId="10" pageNumber="293" type="holotype">Holotype</typeStatus>
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and single
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<specimenCount id="9D214E97FFF0CB1B450FF8ACD113F879" box="[527,621,1899,1923]" pageId="10" pageNumber="293" type="generic">specimen</specimenCount>
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,
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<specimenCount id="9D214E97FFF0CB1B4576F8ACD1D9F879" box="[630,679,1899,1923]" pageId="10" pageNumber="293" type="male">male</specimenCount>
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, collected by
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<location id="8EF8D3C5FFF0CB1B47A1F842D2E0F867" LSID="urn:lsid:plazi:treatment:038E3408FFF0CB1A47DEF914D624FD48:8EF8D3C5FFF0CB1B47A1F842D2E0F867" box="[161,414,1925,1949]" name="Gerardo Carbot-Chanona" pageId="10" pageNumber="293">Gerardo Carbot-Chanona</location>
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<date id="FF99A3DEFFF0CB1B46A3F842D13FF867" box="[419,577,1925,1949]" pageId="10" pageNumber="293" value="2018-03-14">
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<collectingDate id="EFDD5A36FFF0CB1B46A3F842D13FF867" box="[419,577,1925,1949]" pageId="10" pageNumber="293" value="2018-03-14">March 14, 2018</collectingDate>
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</date>
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(IHNFG-5616 part and counterpart); carapace length:
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<quantity id="4CDF28FBFFF0CB1B46CFF867D154F84D" box="[463,554,1952,1976]" metricMagnitude="-2" metricUnit="m" metricValue="1.03" pageId="10" pageNumber="293" unit="mm" value="10.3">10.3 mm</quantity>
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; width:
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<quantity id="4CDF28FBFFF0CB1B4575F867D1AEF84D" box="[629,720,1952,1976]" metricMagnitude="-2" metricUnit="m" metricValue="1.1099999999999999" pageId="10" pageNumber="293" unit="mm" value="11.1">11.1 mm</quantity>
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; carapace + chelipeds length:
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<quantity id="4CDF28FBFFF0CB1B466FF87DD2B5F828" box="[367,459,1978,2002]" metricMagnitude="-2" metricUnit="m" metricValue="1.6199999999999999" pageId="10" pageNumber="293" unit="mm" value="16.2">16.2 mm</quantity>
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; P2 length:
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<quantity id="4CDF28FBFFF0CB1B453EF87DD1E7F828" box="[574,665,1978,2002]" metricMagnitude="-2" metricUnit="m" metricValue="2.25" pageId="10" pageNumber="293" unit="mm" value="22.5">22.5 mm</quantity>
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; P3 length:
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<quantity id="4CDF28FBFFF0CB1B4784F813D39FF816" box="[132,225,2004,2028]" metricMagnitude="-2" metricUnit="m" metricValue="2.65" pageId="10" pageNumber="293" unit="mm" value="26.5">26.5 mm</quantity>
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; P4 or P5 length:
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<quantity id="4CDF28FBFFF0CB1B4693F813D28EF816" box="[403,496,2004,2028]" metricMagnitude="-2" metricUnit="m" metricValue="1.35" pageId="10" pageNumber="293" unit="mm" value="13.5">13.5 mm</quantity>
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.
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</materialsCitation>
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</paragraph>
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||
</subSubSection>
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<subSubSection id="C33DD695FFF0CB1B442DF9E6D708F995" pageId="10" pageNumber="293" type="etymology">
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<paragraph id="8B98851EFFF0CB1B442DF9E6D708F995" blockId="10.[813,1456,1569,1647]" pageId="10" pageNumber="293">
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ETYMOLOGY. — In honour of Don Mardoqueo Carbot-Trujillo, father of Gerardo Carbot-Chanona and well-known natural sciences enthusiast from
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<collectingRegion id="49E34BFCFFF0CB1B44CBF990D762F995" box="[971,1052,1623,1647]" country="Mexico" name="Chiapas" pageId="10" pageNumber="293">Chiapas</collectingRegion>
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,
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<collectingCountry id="F330C58EFFF0CB1B4326F990D70CF995" box="[1062,1138,1623,1647]" name="Mexico" pageId="10" pageNumber="293">Mexico</collectingCountry>
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.
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</paragraph>
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</subSubSection>
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<subSubSection id="C33DD695FFF0CB1B442DF943D790F8E0" pageId="10" pageNumber="293" type="distribution">
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<paragraph id="8B98851EFFF0CB1B442DF943D7EDF94D" blockId="10.[813,1455,1668,1719]" pageId="10" pageNumber="293">
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<typeStatus id="549C3BBCFFF0CB1B442DF943D021F961" box="[813,863,1668,1692]" pageId="10" pageNumber="293">TYPE</typeStatus>
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LOCALITY. — El Chango,
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<quantity id="4CDF28FBFFF0CB1B436BF942D7D2F967" box="[1131,1196,1669,1693]" metricMagnitude="4" metricUnit="m" metricValue="1.7" pageId="10" pageNumber="293" unit="km" value="17.0">17 km</quantity>
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southwest of Tuxtla Gutiérrez,
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<collectingRegion id="49E34BFCFFF0CB1B4468F958D0C7F94D" box="[872,953,1695,1719]" country="Mexico" name="Chiapas" pageId="10" pageNumber="293">Chiapas</collectingRegion>
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, southeastern
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<collectingCountry id="F330C58EFFF0CB1B4343F958D7F1F94D" box="[1091,1167,1695,1719]" name="Mexico" pageId="10" pageNumber="293">Mexico</collectingCountry>
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.
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</paragraph>
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<paragraph id="8B98851EFFF0CB1B442DF90AD790F8E0" blockId="10.[813,1455,1741,1818]" pageId="10" pageNumber="293">
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HORIZON AND AGE. — El Chango quarry,
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<emphasis id="B953590CFFF0CB1B43D6F90AD6F0F91F" box="[1238,1422,1741,1765]" italics="true" pageId="10" pageNumber="293">Cintalapa Member,</emphasis>
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Sierra Madre Formation, early Cenomanian (
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<figureCitation id="131C999BFFF0CB1B43D6F92FD671F8FA" box="[1238,1295,1768,1792]" captionStart="FIG" captionStartId="8.[132,143,1863,1881]" captionTargetBox="[483,1331,214,1833]" captionTargetId="figure@8.[544,1284,215,1832]" captionTargetPageId="8" captionText="FIG. 4. — Stratigraphic section of the Sierra Madre Formation, showing relative position of deposits that crop out at El Chango, sedimentological structures and fossil distribution." figureDoi="http://doi.org/10.5281/zenodo.3699977" httpUri="https://zenodo.org/record/3699977/files/figure.png" pageId="10" pageNumber="293">Fig. 4</figureCitation>
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) near the top of the section, along with diagnostic ammonites.
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</paragraph>
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</subSubSection>
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<subSubSection id="C33DD695FFF0CB1A442DF894D720FE49" lastPageId="11" lastPageNumber="294" pageId="10" pageNumber="293" type="description">
|
||
<paragraph id="8B98851EFFF0CB1B442DF894D0C3F891" blockId="10.[813,1455,1875,2030]" box="[813,957,1875,1901]" pageId="10" pageNumber="293">DESCRIPTION</paragraph>
|
||
<paragraph id="8B98851EFFF0CB1B442DF8B3D0D2F874" blockId="10.[813,1455,1875,2030]" box="[813,940,1908,1934]" pageId="10" pageNumber="293">
|
||
<emphasis id="B953590CFFF0CB1B442DF8B3D0D2F874" box="[813,940,1908,1934]" italics="true" pageId="10" pageNumber="293">Counterpart</emphasis>
|
||
</paragraph>
|
||
<paragraph id="8B98851EFFF0CB1B442DF854D6D1F817" blockId="10.[813,1455,1875,2030]" pageId="10" pageNumber="293">Cuticle very thin, not heavily calcified. A depression well marked along carapace postero- and posterolateral border; posterior margin deeply concave. A few small, regularly dis-</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784FF1ED2C1FEE9" blockId="11.[132,776,217,276]" pageId="11" pageNumber="294">tributed spiniform tubercles, only visible on the counterpart. Rostrum produced, bifurcate.</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784FEFED202FEA9" blockId="11.[132,776,313,1137]" box="[132,380,313,339]" pageId="11" pageNumber="294">
|
||
<emphasis id="B953590CFFF1CB1A4784FEFED202FEA9" box="[132,380,313,339]" italics="true" pageId="11" pageNumber="294">Carapace (internal cast)</emphasis>
|
||
</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784FE9ED076FB8A" blockId="11.[132,776,313,1137]" pageId="11" pageNumber="294">
|
||
Carapace nearly devoid of cuticle, small, nearly as long as wide, semiquadrate to subpentagonal, with moderate anterior narrowing. Anteriorly, an area enclosing the whole lateroanterior region, including front. A strong tooth at level of each mesobranchial region at the junction of both antero- and posterolateral margins. Lateral margin with globose swellings. Dorsal surface marked by bosses. Mesogastric region prolonging into elongate process, on each part of protogastric regions; hepatic regions large, as two lateral conspicuous areas, externally delimitated by deep groove forming right angle; subhepatic region represented by markedly swollen area on each side; gastric region developed; cardiac region inflated. Branchial regions expanded laterally, forming swellings. Several grooves well defined, deep, mainly cervical, postcervical and branchiocardiac; deep branchiocardiac grooves forming two marked median depressions. Rostrum bifurcate, medially depressed, arising well below carapace margin, seemingly integrated into carapace outline. Antero-lateral carapace margins rounded, unarmed, except for a strong tooth at level of each mesobranchial region about at the junction of both antero- and posterolateral margins. Posterior margin long, deeply concave. Carapace posterolateral and posterior margins strongly thickened and raised, expanded to
|
||
<taxonomicName id="4C27FE9DFFF1CB1A4550FBD1D1DDFBCA" box="[592,675,1046,1072]" form="all" pageId="11" pageNumber="294" rank="form">form all</taxonomicName>
|
||
around a narrow, markedly depressed area, continuous and undivided (here called ‘flange’). Eyes, cephalic appendages not preserved.
|
||
</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784FB51D27CFB4A" blockId="11.[132,776,1174,1551]" box="[132,258,1174,1200]" pageId="11" pageNumber="294">
|
||
<emphasis id="B953590CFFF1CB1A4784FB51D27CFB4A" box="[132,258,1174,1200]" italics="true" pageId="11" pageNumber="294">Thoracopods</emphasis>
|
||
</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784FB71D294F9F5" blockId="11.[132,776,1174,1551]" pageId="11" pageNumber="294">
|
||
Mxp3 complete, broad, almost entirely covering buccal cavern; exopodite stout, reaching about distal margin of merus. Chelipeds extended forwards, elongated, not longer than twice carapace width, stout, equal, homomorph, probably unarmed; merus, carpus robust; propodus thicker; fingers rather long, not bent at an angle to palm. P2, P3 extended, very long, much longer than P1 (P3:
|
||
<quantity id="4CDF28FBFFF1CB1A46A3FAB2D174FA6A" box="[419,522,1397,1424]" metricMagnitude="-2" metricUnit="m" metricValue="2.65" pageId="11" pageNumber="294" unit="mm" value="26.5">26.5 mm</quantity>
|
||
, the longest), very slen- der, cylindrical throughout length, unarmed. Only one last leg (P4 or P5) preserved, shorter than P2, P3, straight, only reduced by about half compared to P3, the only one clearly recognisabe measuring
|
||
<quantity id="4CDF28FBFFF1CB1A467FFA33D299F9F5" box="[383,487,1524,1551]" metricMagnitude="-2" metricUnit="m" metricValue="1.35" pageId="11" pageNumber="294" unit="mm" value="13.5">13.5 mm</quantity>
|
||
.
|
||
</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784F9F3D24BF9B4" blockId="11.[132,775,1588,1870]" box="[132,309,1588,1614]" pageId="11" pageNumber="294">
|
||
<emphasis id="B953590CFFF1CB1A4784F9F3D24BF9B4" box="[132,309,1588,1614]" italics="true" pageId="11" pageNumber="294">Thoracic sternum</emphasis>
|
||
</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784F993D107F8B7" blockId="11.[132,775,1588,1870]" pageId="11" pageNumber="294">Thoracic sternum preserved in greater part, extremely wide and extended laterally, mainly sternite 5; sternite 4 proportionally narrower; sternite 1 seemingly small, triangular; no apparent suture between sternites 2-3; sternites 5-8 laterally extended; sternites 6 to 8 gradually diminishing backwards; sternite 8 small, obliquely oriented. Sutures 5/6-7/8 reaching margins of pleon, complete on exposed portion of sternum, sutures underneath the folded pleon being not visible.</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784F8B4D386F877" blockId="11.[132,775,1907,2030]" box="[132,248,1907,1933]" pageId="11" pageNumber="294">
|
||
<emphasis id="B953590CFFF1CB1A4784F8B4D386F877" box="[132,248,1907,1933]" italics="true" pageId="11" pageNumber="294">Male pleon</emphasis>
|
||
</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A4784F854D7FCFEAE" blockId="11.[132,775,1907,2030]" lastBlockId="11.[813,1455,217,340]" pageId="11" pageNumber="294">Pleon preserved in most part, triangular, of six three somites; first three somites not folded ventrally, in continuity with carapace, dorsally exposed; last somite (somite 6) enlarged, with two lateral prominences, probably at location of sockets for pleonal-locking system, seemingly corresponding to an effective mechanism; telson triangular, moderately long, reaching the level of suture 4/5.</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A442DFEBFD0B4FE68" blockId="11.[813,1118,376,435]" box="[813,970,376,402]" pageId="11" pageNumber="294">
|
||
<emphasis id="B953590CFFF1CB1A442DFEBFD0B4FE68" box="[813,970,376,402]" italics="true" pageId="11" pageNumber="294">Male gonopores</emphasis>
|
||
</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A442DFE5ED720FE49" blockId="11.[813,1118,376,435]" box="[813,1118,408,435]" pageId="11" pageNumber="294">Not visible (see Discussion).</paragraph>
|
||
</subSubSection>
|
||
<subSubSection id="C33DD695FFF1CB1A442DFE1FD624FD48" pageId="11" pageNumber="294" type="discussion">
|
||
<paragraph id="8B98851EFFF1CB1A442DFE1FD0EFFE0A" blockId="11.[813,1456,472,690]" box="[813,913,472,498]" pageId="11" pageNumber="294">REMARKS</paragraph>
|
||
<paragraph id="8B98851EFFF1CB1A442DFE3FD624FD48" blockId="11.[813,1456,472,690]" pageId="11" pageNumber="294">
|
||
The most characteristic character of the carapace of the new family is the depressed, undivided area, delimitated by a strongly rimmed and raised margin, here called ‘flange’, which is all along the concave posterior margin of the carapace and extends along most part of posterolateral margin (
|
||
<figureCitation id="131C999BFFF1CB1A4235FDBFD60AFD68" box="[1333,1396,632,658]" captionStart="FIG" captionStartId="14.[132,143,1420,1438]" captionTargetBox="[132,1455,215,1375]" captionTargetId="figure@14.[132,1455,214,1375]" captionTargetPageId="14" captionText="FIG. 7. — Archaeochiapasa mardoqueoi n. gen.,n. sp., Chiapas,El Chango quarry,lower Cenomanian Cintalapa Member of Sierra Madre Formation,G.Carbot-Chanona coll., holotype, male, 10.3 × 11.1 mm (IHNFG-5616): dorsal view, with proximal part of pleon (actually a1-a3) dorsally visible. Abbreviations: a1, pleonal somite 1; fl, flange; p.c., concave posterior border of carapace; r, thickened carapace border. Scale bar: 5 mm." figureDoi="http://doi.org/10.5281/zenodo.3699983" httpUri="https://zenodo.org/record/3699983/files/figure.png" pageId="11" pageNumber="294">Figs 7</figureCitation>
|
||
;
|
||
<figureCitation id="131C999BFFF1CB1A4280FDBFD6DCFD68" box="[1408,1442,632,658]" captionStart="FIG" captionStartId="18.[132,142,1841,1859]" captionTargetBox="[132,1455,215,1811]" captionTargetId="figure@18.[698,1267,777,1343]" captionTargetPageId="18" captionText="FIG. 9. — Archaeochiapasa mardoqueoi n. gen.,n. sp.,male 10.3 × 11.1 mm,holotype (IHNFG-5616):A, close-up of front and rostrum;B, close-up of posterior portion of carapace.Abbreviations:a1-a3, pleonal somites 1-3; p.c., concave posterior border of carapace; P, reduced P4 or P5; ro, rostrum.Scale bars:A,2 mm; B, 2.5 mm." figureDoi="http://doi.org/10.5281/zenodo.3699987" httpUri="https://zenodo.org/record/3699987/files/figure.png" pageId="11" pageNumber="294">9B</figureCitation>
|
||
). The flange is well visible in the counterpart (
|
||
<figureCitation id="131C999BFFF1CB1A420CFD5FD634FD48" box="[1292,1354,664,690]" captionStart="FIG" captionStartId="12.[132,143,1591,1609]" captionTargetBox="[160,1427,215,1546]" captionTargetId="figure@12.[702,1247,784,1356]" captionTargetPageId="12" captionText="FIG. 6. — Archaeochiapasa mardoqueoi n. gen., n. sp. holotype, male (IHNFG-5616). A, specimen photographed in situ at El Chango quarry; B-D, steinkern (counterpart):B, illuminated with oblique yellow light; C, illuminated with incident light and coated with ammonium chloride;D, illuminated with oblique, blue light and submerged in water. Scale bars: A, 1 cm; B-D, 5 mm." figureDoi="http://doi.org/10.5281/zenodo.3699981" httpUri="https://zenodo.org/record/3699981/files/figure.png" pageId="11" pageNumber="294">Fig. 6</figureCitation>
|
||
).
|
||
</paragraph>
|
||
</subSubSection>
|
||
</treatment>
|
||
</document> |