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<document id="8B4B3635010DD96863DB45A2B7654DEB" ID-CLB-Dataset="292743" ID-DOI="10.1080/14772019.2018.1486336" ID-GBIF-Dataset="48efca5b-95cd-47a3-96fc-2953a51a1b20" ID-ISSN="1478-0941" ID-PMC="PMC6510527" ID-PubMed="31156351" ID-Zenodo-Dep="10883458" ID-ZooBank="8BB8F0F3-35C5-47FA-AE3C-2CBF445C4BCA" IM.bibliography_approvedBy="diego" IM.illustrations_approvedBy="felipe" IM.materialsCitations_approvedBy="felipe" IM.metadata_approvedBy="felipe" IM.taxonomicNames_approvedBy="diego" IM.treatments_approvedBy="diego" checkinTime="1711483881987" checkinUser="felipe" docAuthor="Marram ̀, Giuseppe, Schult, Ortwin &amp; Kriwe, Jurgen" docDate="2019" docId="B71587DFBB7D9D5D21282D0A8E158E87" docLanguage="en" docName="JSystPalaeontol.17.11.937-960.pdf" docOrigin="Journal of Systematic Palaeontology 17 (11)" docSource="http://dx.doi.org/10.1080/14772019.2018.1486336" docStyle="DocumentStyle:602474738E3D100F0F13788B53F61545.3:JSystPalaeontol.2016-.journal_article.open" docStyleId="602474738E3D100F0F13788B53F61545" docStyleName="JSystPalaeontol.2016-.journal_article.open" docStyleVersion="3" docTitle="Ostarriraja parva Marram̀ &amp; Schult &amp; Kriwe 2019, sp. nov." docType="treatment" docVersion="5" lastPageNumber="947" masterDocId="4B2CFFA7BB7B9D51206D284F8B688823" masterDocTitle="A new Miocene skate from the Central Paratethys (Upper Austria): the first unambiguous skeletal record for the Rajiformes (Chondrichthyes: Batomorphii)" masterLastPageNumber="960" masterPageNumber="937" pageNumber="942" updateTime="1712241465140" updateUser="ExternalLinkService" zenodo-license-document="CC-BY-4.0">
<mods:mods id="C0F3093B8874FB0EF0B4C33470C4B662" xmlns:mods="http://www.loc.gov/mods/v3">
<mods:titleInfo id="3E20FFE43DB12E081C997093C0C890F8">
<mods:title id="5EC6D60CE367E4DDD27FF4B96CBC2E90">A new Miocene skate from the Central Paratethys (Upper Austria): the first unambiguous skeletal record for the Rajiformes (Chondrichthyes: Batomorphii)</mods:title>
</mods:titleInfo>
<mods:name id="9BC32E21CE39584FB02D606122292332" type="personal">
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<mods:roleTerm id="E9F162693F9B6C6CBE7A61C26A8163BB">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="4444EFB93993A86201D6AE80A4650666">Marram ̀, Giuseppe</mods:namePart>
</mods:name>
<mods:name id="CD4D3B9C65969746BC70414AC897032D" type="personal">
<mods:role id="BAEB99FCA5AD03F156BF3311E45143BA">
<mods:roleTerm id="85477C71D3D4B2FA501A2CCCA242DEC3">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="7DF4B6C9FB096CA40B968FC36D696339">Schult, Ortwin</mods:namePart>
</mods:name>
<mods:name id="2920064736E239CD1C20DA41C3AE2D2C" type="personal">
<mods:role id="EBACA429FF3F1F14CCADC0C704F75826">
<mods:roleTerm id="7717654C05DC1C979B9C814A2FA8D21B">Author</mods:roleTerm>
</mods:role>
<mods:namePart id="BA948A15F3E9DBFA62B36B3D67BEA91F">Kriwe, Jurgen</mods:namePart>
</mods:name>
<mods:typeOfResource id="06BCEAEC45E6419BEF5F7444D9F3ED86">text</mods:typeOfResource>
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<mods:titleInfo id="EF6093A35866B0D7BD9865EBD495FB9A">
<mods:title id="8929CDDC22B43A5B4EDDD3311F14A394">Journal of Systematic Palaeontology</mods:title>
</mods:titleInfo>
<mods:part id="33B035160D03B2C884D8A89CB9301A64">
<mods:date id="7F5ADBED14EF074A4C7AD3A96D5D70EC">2019</mods:date>
<mods:detail id="8370B18B706766A20383F42457604A2D" type="pubDate">
<mods:number id="7B7C691AF39953467518D267694A2804">2018-10-30</mods:number>
</mods:detail>
<mods:detail id="245B2DAB10C694FA94A07F20F11ABD8C" type="volume">
<mods:number id="86BD6A124A816C177ED003E3AEB56202">17</mods:number>
</mods:detail>
<mods:detail id="132785A3B12AC3E5A30B78F78E0E8E24" type="issue">
<mods:number id="B1A3F7E38CC9A4B15967AA22E5D9C556">11</mods:number>
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<mods:extent id="ADAF7E8BA47ED18D941531662F0E6B26" unit="page">
<mods:start id="3529926FAD3750E1CCF313EE8618CCE7">937</mods:start>
<mods:end id="7739712E49639A36CA7B7AA1EA7D1676">960</mods:end>
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<mods:location id="4E7C32BCABC946ED596B151C1E4D0079">
<mods:url id="C7EF6B215FC76EBCA2C813043ABBC58E">http://dx.doi.org/10.1080/14772019.2018.1486336</mods:url>
</mods:location>
<mods:classification id="C662CA12F18F4C2E581E64EE8B97534C">journal article</mods:classification>
<mods:identifier id="786D032B313D60818A1E235D079ABB11" type="CLB-Dataset">292743</mods:identifier>
<mods:identifier id="55360AF493C61194A0038F81C7B49DE7" type="DOI">10.1080/14772019.2018.1486336</mods:identifier>
<mods:identifier id="DA785E06C521A7CE90581EC633D6AE15" type="GBIF-Dataset">48efca5b-95cd-47a3-96fc-2953a51a1b20</mods:identifier>
<mods:identifier id="549D98E5D738A5252DFD675537DA681A" type="ISSN">1478-0941</mods:identifier>
<mods:identifier id="8FE020719971A9B0169E9117B790D41F" type="PMC">PMC6510527</mods:identifier>
<mods:identifier id="6FCCFC048CE27D7091F123E6A5117835" type="PubMed">31156351</mods:identifier>
<mods:identifier id="107B4B969980623D7B54A8E990CFA2D3" type="Zenodo-Dep">10883458</mods:identifier>
<mods:identifier id="437FF58120DE83F121CF9A5B4719DC74" type="ZooBank">8BB8F0F3-35C5-47FA-AE3C-2CBF445C4BCA</mods:identifier>
</mods:mods>
<treatment id="B71587DFBB7D9D5D21282D0A8E158E87" ID-DOI="http://doi.org/10.5281/zenodo.10927191" ID-Zenodo-Dep="10927191" LSID="urn:lsid:plazi:treatment:B71587DFBB7D9D5D21282D0A8E158E87" httpUri="http://treatment.plazi.org/id/B71587DFBB7D9D5D21282D0A8E158E87" lastPageId="12" lastPageNumber="947" pageId="6" pageNumber="942">
<subSubSection id="77A66542BB7D9D5721282D0A890F8D7F" box="[325,615,1349,1373]" pageId="6" pageNumber="942" type="nomenclature">
<paragraph id="3F0336C9BB7D9D5721282D0A890F8D7F" blockId="6.[325,615,1349,1405]" box="[325,615,1349,1373]" pageId="6" pageNumber="942">
<heading id="644B81A5BB7D9D5721282D0A890F8D7F" box="[325,615,1349,1373]" centered="true" fontSize="10" level="2" pageId="6" pageNumber="942" reason="8">
<taxonomicName id="F8BC4D4ABB7D9D5721282D0A896F8D7E" authority="Marram̀ &amp; Schult &amp; Kriwe, 2019" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[325,519,1349,1373]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="6" pageNumber="942" phylum="Chordata" rank="species" species="parva" status="sp. nov.">
<emphasis id="0DC8EADBBB7D9D5721282D0A896F8D7E" bold="true" box="[325,519,1349,1373]" italics="true" pageId="6" pageNumber="942">Ostarriraja parva</emphasis>
</taxonomicName>
<taxonomicNameLabel id="16FB57A0BB7D9D57227D2D0A890F8D7F" box="[528,615,1349,1372]" pageId="6" pageNumber="942" rank="species">sp. nov.</taxonomicNameLabel>
</heading>
</paragraph>
</subSubSection>
<subSubSection id="77A66542BB7D9D5721EC2D2A8AFD8EEE" pageId="6" pageNumber="942" type="description">
<paragraph id="3F0336C9BB7D9D5721EC2D2A89438D5F" blockId="6.[325,615,1349,1405]" box="[385,555,1381,1405]" pageId="6" pageNumber="942">
(
<figureCitation id="A7872A4CBB7D9D5721E42D2A8AA78D5F" box="[393,463,1381,1404]" captionStart="Figure 2" captionStartId="5.[159,226,1685,1706]" captionTargetBox="[368,1259,191,1665]" captionTargetId="figure-1@5.[365,1262,188,1668]" captionTargetPageId="5" captionText="Figure 2. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. A, NHMW 2005z0283/0097a, holotype under normal light; B, NHMW 2005z0283/0097a, holotype under UV light; C, NHMW 2005z0283/0097b, holotype, counterpart under normal light; D, NHMW 2005z0283/0097b, holotype, counterpart under UV light. Scale bars: 10 mm." figureDoi="http://doi.org/10.5281/zenodo.10883462" httpUri="https://zenodo.org/record/10883462/files/figure.png" pageId="6" pageNumber="942">Figs 2</figureCitation>
,
<figureCitation id="A7872A4CBB7D9D5721B02D2A8A828D5F" box="[477,490,1381,1404]" captionStart="Figure 3" captionStartId="6.[159,226,780,801]" captionTargetBox="[368,1252,191,759]" captionTargetId="figure-452@6.[365,1262,188,762]" captionTargetPageId="6" captionText="Figure 3. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the head and pectoral region of the holotype under UV light; B, restoration. Abbreviations: ac, antorbital cartilage; cb, 5th ceratobranchial; fpf, fronto-parietal fontanelle; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pa, pectoral arch; pq, palatoquadrate; pro, propterygium; rad, radials; syn, synarcual. Scale bars: 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883464" httpUri="https://zenodo.org/record/10883464/files/figure.png" pageId="6" pageNumber="942">3</figureCitation>
,
<figureCitation id="A7872A4CBB7D9D5721972D2A894A8D5F" box="[506,546,1381,1405]" captionStart-0="Figure 5" captionStart-1="Figure 6" captionStart-2="Figure 7" captionStartId-0="8.[159,226,876,897]" captionStartId-1="9.[159,226,666,687]" captionStartId-2="9.[159,226,1387,1408]" captionTargetBox-0="[368,1259,191,855]" captionTargetBox-1="[368,1249,191,645]" captionTargetBox-2="[368,1259,803,1363]" captionTargetId-0="figure-473@8.[365,1262,188,858]" captionTargetId-1="figure-239@9.[365,1261,188,648]" captionTargetId-2="figure-292@9.[365,1262,800,1366]" captionTargetPageId-0="8" captionTargetPageId-1="9" captionTargetPageId-2="9" captionText-0="Figure 5. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the tail with the anterior part on the left side; B, detail of the radials in the pectoral disc; C, close-up of the teeth; D, detail of some tail thorns. Abbreviations: mc, Meckel’s cartilage; pq, palatoquadrate; th, thorns; vc, vertebral centra. The arrows indicate the rostral direction. Scale bars: A–C = 1 mm; D = 0.5 mm." captionText-1="Figure 6. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. A, NHMW 2005z0283/0097, close-up of the pelvic girdle and fins of the holotype under UV light; B, restoration. Abbreviations: bas, basipterygium; cr, compound radial; prp, prepelvic process; pub, puboischiadic bar; rad, radials. Scale bars: 10mm." captionText-2="Figure 7. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. Three isolated teeth from the holotype NHMW 2005z0283/0097 in A, occlusal; B, lingual; C, labial; and D, lateral view. Scale bar: 200µm." figureDoi-0="http://doi.org/10.5281/zenodo.10883468" figureDoi-1="http://doi.org/10.5281/zenodo.10883470" figureDoi-2="http://doi.org/10.5281/zenodo.10883474" httpUri-0="https://zenodo.org/record/10883468/files/figure.png" httpUri-1="https://zenodo.org/record/10883470/files/figure.png" httpUri-2="https://zenodo.org/record/10883474/files/figure.png" pageId="6" pageNumber="942">5–7</figureCitation>
)
</paragraph>
<paragraph id="3F0336C9BB7D9D5720D42DFA89428DCF" blockId="6.[185,781,1461,1612]" pageId="6" pageNumber="942">
1973
<taxonomicName id="F8BC4D4ABB7D9D57216F2DFA8A378DEF" box="[258,351,1461,1484]" class="Elasmobranchii" family="Dasyatidae" genus="Dasyatis" kingdom="Animalia" order="Myliobatiformes" pageId="6" pageNumber="942" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB7D9D57216F2DFA8A378DEF" box="[258,351,1461,1484]" italics="true" pageId="6" pageNumber="942">Dasyatis</emphasis>
</taxonomicName>
(?) sp.; Schultz in Brzobohaty &amp; Schultz: 657, pl. 1, fig. 10.
</paragraph>
<paragraph id="3F0336C9BB7D9D5720D42DBA8A188E0E" blockId="6.[185,781,1461,1612]" pageId="6" pageNumber="942">
1973
<taxonomicName id="F8BC4D4ABB7D9D5720902DBA8A328E2F" box="[253,346,1525,1548]" class="Elasmobranchii" family="Dasyatidae" genus="Dasyatis" kingdom="Animalia" order="Myliobatiformes" pageId="6" pageNumber="942" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB7D9D5720902DBA8A328E2F" box="[253,346,1525,1548]" italics="true" pageId="6" pageNumber="942">Dasyatis</emphasis>
</taxonomicName>
(?) sp.; Schultz in
<collectionCode id="59ADAE0CBB7D9D5722272DBA89348E2F" box="[586,604,1525,1548]" country="Chile" name="Departamento de Geologia, Universidad de Chile" pageId="6" pageNumber="942">R</collectionCode>
¨ogl, Schultz, &amp;
<bibCitation id="EA963EA5BB7D9D5720902E598A188E0E" box="[253,368,1558,1581]" page="154" pageId="6" pageNumber="942" score="1.97023359760351E-6" volumeTitle="Holz" year="2013">Holz: 154.</bibCitation>
</paragraph>
<paragraph id="3F0336C9BB7D9D5720D42E7A89DC8E6F" blockId="6.[185,781,1461,1612]" box="[185,692,1589,1612]" pageId="6" pageNumber="942">
2013
<taxonomicName id="F8BC4D4ABB7D9D5720952E7A8A178E6F" box="[248,383,1589,1612]" class="Elasmobranchii" family="Dasyatidae" genus="Dasyatis" kingdom="Animalia" order="Myliobatiformes" pageId="6" pageNumber="942" phylum="Chordata" rank="species" species="undetermined">
<emphasis id="0DC8EADBBB7D9D5720952E7A8A3D8E6F" box="[248,341,1589,1612]" italics="true" pageId="6" pageNumber="942">Dasyatis</emphasis>
sp.
</taxonomicName>
; Schultz: 103, pl. 30, fig. 1.
</paragraph>
<paragraph id="3F0336C9BB7D9D5720F22E398AFD8EEE" blockId="6.[159,781,1654,1741]" pageId="6" pageNumber="942">
<emphasis id="0DC8EADBBB7D9D5720F22E398AF28EAE" bold="true" box="[159,410,1654,1677]" pageId="6" pageNumber="942">Derivation of name.</emphasis>
From the Latin word
<emphasis id="0DC8EADBBB7D9D5722A92E3988658EAE" box="[708,781,1654,1677]" italics="true" pageId="6" pageNumber="942">parvus</emphasis>
meaning ‘small’, referring to the small size of the specimen; gender feminine.
</paragraph>
</subSubSection>
<subSubSection id="77A66542BB7D9D5720F22EB98EE88C28" pageId="6" pageNumber="942" type="materials_examined">
<paragraph id="3F0336C9BB7D9D5720F22EB98AEA8F4E" blockId="6.[159,781,1782,1901]" pageId="6" pageNumber="942">
<materialsCitation id="8FD43C94BB7D9D5720F22EB98AEA8F4E" collectionCode="NHMW" pageId="6" pageNumber="942" specimenCode="NHMW 2005" specimenCount="1" typeStatus="holotype">
<emphasis id="0DC8EADBBB7D9D5720F22EB98A658F2E" bold="true" box="[159,269,1782,1805]" pageId="6" pageNumber="942">
<typeStatus id="E007886BBB7D9D5720F22EB98A618F2E" box="[159,265,1782,1805]" pageId="6" pageNumber="942" type="holotype">Holotype</typeStatus>
.
</emphasis>
<specimenCode id="6F1A9EB2BB7D9D57214D2EB98AD78F2E" box="[288,447,1782,1805]" collectionCode="NHMW" country="Austria" httpUri="http://grbio.org/cool/91g3-0mnw" name="Naturhistorisches Museum, Wien" pageId="6" pageNumber="942" type="Museum">NHMW 2005</specimenCode>
z0283/0097, nearly complete articulated skeleton in part and counterpart preserved in a slab having length and width of 98.3 and 64.1 mm, respectively (
<figureCitation id="A7872A4CBB7D9D57215C2F198A198F4E" box="[305,369,1878,1901]" captionStart="Figure 2" captionStartId="5.[159,226,1685,1706]" captionTargetBox="[368,1259,191,1665]" captionTargetId="figure-1@5.[365,1262,188,1668]" captionTargetPageId="5" captionText="Figure 2. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. A, NHMW 2005z0283/0097a, holotype under normal light; B, NHMW 2005z0283/0097a, holotype under UV light; C, NHMW 2005z0283/0097b, holotype, counterpart under normal light; D, NHMW 2005z0283/0097b, holotype, counterpart under UV light. Scale bars: 10 mm." figureDoi="http://doi.org/10.5281/zenodo.10883462" httpUri="https://zenodo.org/record/10883462/files/figure.png" pageId="6" pageNumber="942">Fig. 2</figureCitation>
).
</materialsCitation>
</paragraph>
<paragraph id="3F0336C9BB7D9D5723202BFB8EE88C28" blockId="6.[845,1467,948,1035]" pageId="6" pageNumber="942">
<emphasis id="0DC8EADBBB7D9D5723202BFB8FF78BE8" bold="true" box="[845,1183,948,971]" pageId="6" pageNumber="942">Type locality and horizon.</emphasis>
Rainbach im Innkreis,
<collectingRegion id="FD78F82BBB7D9D5723202B9B88838BC8" box="[845,1003,980,1003]" country="Austria" name="Oberoesterreich" pageId="6" pageNumber="942">Upper Austria</collectingRegion>
,
<collectingCountry id="47AB7659BB7D9D5723942B9B8F238BC8" box="[1017,1099,980,1003]" name="Austria" pageId="6" pageNumber="942">Austria</collectingCountry>
; Ottnangian, middle Burdigalian, early Miocene (
<emphasis id="0DC8EADBBB7D9D5723972BBB8F648C28" box="[1018,1036,1012,1035]" italics="true" pageId="6" pageNumber="942">c.</emphasis>
18 Ma; see
<bibRefCitation id="5B2D4B38BB7D9D5724FE2BBB8E188C28" author="Grunert, P. &amp; Soliman, A. &amp; Scholger, R. &amp; Harzhauser, M. &amp; Piller, W. E." box="[1171,1392,1012,1035]" pageId="6" pageNumber="942" pagination="1 - 16" refId="ref15281" refString="Grunert, P., Soliman, A., Cori ´´ c, S., Scholger, R., Harzhauser, M. &amp; Piller, W. E. 2010 a. Stratigraphic reevaluation of the stratotype for the regional Ottnangian stage (Central Paratethys, middle Burdigalian). Newsletter on Stratigraphy, 44, 1 - 16." type="journal article" year="2010">
Grunert
<emphasis id="0DC8EADBBB7D9D5724822BBB8E488C28" box="[1263,1312,1012,1035]" italics="true" pageId="6" pageNumber="942">et al</emphasis>
. 2010a
</bibRefCitation>
).
</paragraph>
</subSubSection>
<subSubSection id="77A66542BB7D9D5723212C7B8FEF8C68" box="[844,1159,1076,1099]" pageId="6" pageNumber="942" type="diagnosis">
<paragraph id="3F0336C9BB7D9D5723212C7B8FEF8C68" blockId="6.[844,1159,1076,1099]" box="[844,1159,1076,1099]" pageId="6" pageNumber="942">
<emphasis id="0DC8EADBBB7D9D5723212C7B88A98C68" bold="true" box="[844,961,1076,1099]" pageId="6" pageNumber="942">Diagnosis.</emphasis>
As for the genus.
</paragraph>
</subSubSection>
<subSubSection id="77A66542BB7D9D5D23212C3B8E158E87" lastPageId="12" lastPageNumber="948" pageId="6" pageNumber="942" type="description">
<paragraph id="3F0336C9BB7D9D5623212C3B8FF28F79" blockId="6.[844,1467,1140,1901]" lastBlockId="7.[844,1467,1699,1882]" lastPageId="7" lastPageNumber="943" pageId="6" pageNumber="942">
<emphasis id="0DC8EADBBB7D9D5723212C3B88BF8CA8" bold="true" box="[844,983,1140,1163]" pageId="6" pageNumber="942">Description.</emphasis>
Measurements and body proportions are difficult to establish since the specimen does not preserve the anterior-most portion of the body (including the rostral cartilage), the posterior-most tip of the tail, or the distal-most segments of the pectoral radials, rendering it difficult to detect the exact outline, the width of the pectoral disc and the total length of the specimen. However, the skate is quite small (possibly reaching a length of
<quantity id="F8449B2CBB7D9D5723D72D3A8F4A8DAF" box="[954,1058,1396,1420]" metricMagnitude="-1" metricUnit="m" metricValue="1.3" metricValueMax="1.4" metricValueMin="1.2" pageId="6" pageNumber="942" unit="cm" value="13.0" valueMax="14.0" valueMin="12.0">12–14 cm</quantity>
in life) and is preserved as part and counterpart in a subrectangular slab having a length and width of 98.3 and 64.1 mm, respectively (
<figureCitation id="A7872A4CBB7D9D57255D2DFA8E1C8DEF" box="[1328,1396,1461,1484]" captionStart="Figure 2" captionStartId="5.[159,226,1685,1706]" captionTargetBox="[368,1259,191,1665]" captionTargetId="figure-1@5.[365,1262,188,1668]" captionTargetPageId="5" captionText="Figure 2. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. A, NHMW 2005z0283/0097a, holotype under normal light; B, NHMW 2005z0283/0097a, holotype under UV light; C, NHMW 2005z0283/0097b, holotype, counterpart under normal light; D, NHMW 2005z0283/0097b, holotype, counterpart under UV light. Scale bars: 10 mm." figureDoi="http://doi.org/10.5281/zenodo.10883462" httpUri="https://zenodo.org/record/10883462/files/figure.png" pageId="6" pageNumber="942">Fig. 2</figureCitation>
). The small size of the specimen, the morphology of teeth, the poor mineralization of some skeletal structures, and the absence of claspers suggest that the specimen might represent a juvenile female skate, although the almost complete mineralization of the synarcual might indicate a late juvenile or even subadult. The specimen is displayed in ventral view, as suggested by the exposure of jaws and teeth, and the scapulocoracoid bar of the pectoral girdle lying ventrally to the vertebral axis. The body is dorso-ventrally compressed, and the disc appears largely free of dermal denticles and thorns, at least ventrally. However, multiple rows (at least three) of thorns are present along the tail, which is long and robust, but not slender and whip-like as in skates of the family
<taxonomicName id="F8BC4D4ABB7C9D56209C2E8C8ADA8EF9" box="[241,434,1731,1754]" class="Elasmobranchii" family="Anacanthobatidae" kingdom="Animalia" order="Rajiformes" pageId="7" pageNumber="943" phylum="Chordata" rank="family">Anacanthobatidae</taxonomicName>
(see
<bibRefCitation id="5B2D4B38BB7C9D56219A2E8C89E98EF9" author="Hulley, P. A." box="[503,641,1731,1754]" pageId="7" pageNumber="943" pagination="131 - 158" refId="ref15989" refString="Hulley, P. A. 1973. Interrelationships within the Anacanthobatidae (Chondrichthyes, Rajoidea), with a description of the lectotype of Anacanthobatis marmoratus von Bonde &amp; Swart, 1923. Annals of the South African Museum, 62 (4), 131 - 158." type="journal article" year="1973">Hulley 1973</bibRefCitation>
;
<bibRefCitation id="5B2D4B38BB7C9D5622FB2E8C8BBC8ED9" author="Last, P. R. &amp; White, W. &amp; Carvalho, M. R. &amp; Stehmann, M. &amp; Naylor, G." pageId="7" pageNumber="943" refId="ref16424" refString="Last, P. R., White, W., Carvalho, M. R., S´eret, B., Stehmann, M. &amp; Naylor, G. 2016. Rays of the world. CSIRO Publishing, Clayton North, 790 pp." type="book" year="2016">
Last
<emphasis id="0DC8EADBBB7C9D5622BC2E8C88658EF9" box="[721,781,1731,1754]" italics="true" pageId="7" pageNumber="943">et al.</emphasis>
2016
</bibRefCitation>
). Several parts of the skeleton show the typical prismatic calcification of elasmobranch fishes (
<bibRefCitation id="5B2D4B38BB7C9D5622DF2F4C8A2A8F19" author="Dean, M. N. &amp; Summers, A. P." pageId="7" pageNumber="943" pagination="164 - 168" refId="ref14821" refString="Dean, M. N. &amp; Summers, A. P. 2006. Mineralized cartilage in the skeleton of chondrichthyan fishes. Zoology, 109, 164 - 168." type="journal article" year="2006">Dean &amp; Summers 2006</bibRefCitation>
) and are highly visible in
<collectionCode id="59ADAE0CBB7C9D5622062F6C89FA8F19" box="[619,658,1827,1850]" country="Colombia" name="Departamento de Biologia de la Universidad del Valle" pageId="7" pageNumber="943">UV</collectionCode>
light (
<figureCitation id="A7872A4CBB7C9D5622B22F6C8BC68F79" captionStart="Figure 2" captionStartId="5.[159,226,1685,1706]" captionTargetBox="[368,1259,191,1665]" captionTargetId="figure-1@5.[365,1262,188,1668]" captionTargetPageId="5" captionText="Figure 2. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. A, NHMW 2005z0283/0097a, holotype under normal light; B, NHMW 2005z0283/0097a, holotype under UV light; C, NHMW 2005z0283/0097b, holotype, counterpart under normal light; D, NHMW 2005z0283/0097b, holotype, counterpart under UV light. Scale bars: 10 mm." figureDoi="http://doi.org/10.5281/zenodo.10883462" httpUri="https://zenodo.org/record/10883462/files/figure.png" pageId="7" pageNumber="943">Figs 2</figureCitation>
,
<figureCitation id="A7872A4CBB7C9D5620D32F0C8BA38F79" box="[190,203,1859,1882]" captionStart="Figure 3" captionStartId="6.[159,226,780,801]" captionTargetBox="[368,1252,191,759]" captionTargetId="figure-452@6.[365,1262,188,762]" captionTargetPageId="6" captionText="Figure 3. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the head and pectoral region of the holotype under UV light; B, restoration. Abbreviations: ac, antorbital cartilage; cb, 5th ceratobranchial; fpf, fronto-parietal fontanelle; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pa, pectoral arch; pq, palatoquadrate; pro, propterygium; rad, radials; syn, synarcual. Scale bars: 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883464" httpUri="https://zenodo.org/record/10883464/files/figure.png" pageId="7" pageNumber="943">3</figureCitation>
,
<figureCitation id="A7872A4CBB7C9D5620B32F0C8B838F79" box="[222,235,1859,1882]" captionStart="Figure 6" captionStartId="9.[159,226,666,687]" captionTargetBox="[368,1249,191,645]" captionTargetId="figure-239@9.[365,1261,188,648]" captionTargetPageId="9" captionText="Figure 6. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. A, NHMW 2005z0283/0097, close-up of the pelvic girdle and fins of the holotype under UV light; B, restoration. Abbreviations: bas, basipterygium; cr, compound radial; prp, prepelvic process; pub, puboischiadic bar; rad, radials. Scale bars: 10mm." figureDoi="http://doi.org/10.5281/zenodo.10883470" httpUri="https://zenodo.org/record/10883470/files/figure.png" pageId="7" pageNumber="943">6</figureCitation>
). However, some of the skeletal elements, such as the distal-most segments of the pectoral radials, are not preserved, suggesting that they were still poorly or not at all mineralized. The number of dorsal fins, typically present near the extremity of the tail in skates (e.g.
<bibRefCitation id="5B2D4B38BB7C9D5623212F6C88928F19" author="Last, P. R. &amp; White, W. &amp; Carvalho, M. R. &amp; Stehmann, M. &amp; Naylor, G." box="[844,1018,1827,1850]" pageId="7" pageNumber="943" refId="ref16424" refString="Last, P. R., White, W., Carvalho, M. R., S´eret, B., Stehmann, M. &amp; Naylor, G. 2016. Rays of the world. CSIRO Publishing, Clayton North, 790 pp." type="book" year="2016">
Last
<emphasis id="0DC8EADBBB7C9D5623E92F6C88D48F19" box="[900,956,1827,1850]" italics="true" pageId="7" pageNumber="943">et al.</emphasis>
2016
</bibRefCitation>
) is unknown in
<taxonomicName id="F8BC4D4ABB7C9D5624DC2F6C8E448F19" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[1201,1324,1827,1850]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="7" pageNumber="943" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB7C9D5624DC2F6C8E448F19" box="[1201,1324,1827,1850]" italics="true" pageId="7" pageNumber="943">Ostarriraja</emphasis>
</taxonomicName>
, because the tip of the tail is not preserved.
</paragraph>
<caption id="6BC36641BB7C9D5620F22DC289EF8E54" ID-DOI="http://doi.org/10.5281/zenodo.10883466" ID-Zenodo-Dep="10883466" httpUri="https://zenodo.org/record/10883466/files/figure.png" pageId="7" pageNumber="943" startId="7.[159,226,1421,1442]" targetBox="[368,1259,200,1401]" targetPageId="7" targetType="figure">
<paragraph id="3F0336C9BB7C9D5620F22DC289EF8E54" blockId="7.[159,1468,1420,1656]" pageId="7" pageNumber="943">
<emphasis id="0DC8EADBBB7C9D5620F22DC28A698D81" bold="true" box="[159,257,1421,1442]" pageId="7" pageNumber="943">Figure 4.</emphasis>
Anatomical details of some of the living skate representatives used for comparisons.
<emphasis id="0DC8EADBBB7C9D5624E52DC28FD48D81" bold="true" box="[1160,1212,1420,1442]" pageId="7" pageNumber="943">A–D,</emphasis>
<emphasis id="0DC8EADBBB7C9D5624A42DC28E468D81" box="[1225,1326,1421,1442]" italics="true" pageId="7" pageNumber="943">Amblyraja</emphasis>
sp., UNIVIE EMRG-Chond-H1, cleared and stained specimen;
<emphasis id="0DC8EADBBB7C9D5622E52DE789F68D9E" bold="true" box="[648,670,1448,1469]" pageId="7" pageNumber="943">E,</emphasis>
<taxonomicName id="F8BC4D4ABB7C9D5622CB2DE788A88D9E" authority="Linnaeus, 1758" authorityName="Linnaeus" authorityYear="1758" box="[678,960,1448,1469]" class="Elasmobranchii" family="Rajidae" genus="Raja" kingdom="Animalia" order="Rajiformes" pageId="7" pageNumber="943" phylum="Chordata" rank="species" species="clavata">
<emphasis id="0DC8EADBBB7C9D5622CB2DE788498D9E" box="[678,801,1448,1469]" italics="true" pageId="7" pageNumber="943">Raja clavata</emphasis>
Linnaeus, 1758
</taxonomicName>
, UNIVIE EMRG-H2, micro-CT scan of the tail;
<emphasis id="0DC8EADBBB7C9D5625CE2DE78ED38D9E" bold="true" box="[1443,1467,1448,1469]" pageId="7" pageNumber="943">A,</emphasis>
overall view of the specimen in ventral view;
<emphasis id="0DC8EADBBB7C9D5622042D8D89178DF4" bold="true" box="[617,639,1474,1495]" pageId="7" pageNumber="943">B,</emphasis>
close-up of the head and pectoral region;
<emphasis id="0DC8EADBBB7C9D56244B2D8D8F558DF4" bold="true" box="[1062,1085,1474,1495]" pageId="7" pageNumber="943">C,</emphasis>
close-up of the pelvic girdle and fins;
<emphasis id="0DC8EADBBB7C9D5620F22D928BDE8DD1" bold="true" box="[159,182,1501,1522]" pageId="7" pageNumber="943">D,</emphasis>
detail of the propterygial radials near the head region; note their reduced catenated calcification;
<emphasis id="0DC8EADBBB7C9D5624142D928FE78DD1" bold="true" box="[1145,1167,1501,1522]" pageId="7" pageNumber="943">E,</emphasis>
detail of the vertebral column on the tail of UNIVIE EMRG-H2 in ventral view, showing the prismatic calcification of the cartilage forming the haemal arches. Abbreviations: ac, antorbital cartilage; bas, basipterygium; cb, 5th ceratobranchial; cr, compound radial; ha, haemal arches; hyo, hyomandibula; mc, Meckel’ s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pq, palatoquadrate; pro, propterygium; prp, prepelvic process; pub, puboischiadic bar; ro, rostral cartilage; sca, scapulocoracoid; syn, synarcual; th, thorns. Scale bars: A–C = 20 mm; D = 10 mm; E = 5 mm.
</paragraph>
</caption>
<caption id="6BC36641BB739D5920F22B2389D38BF2" ID-DOI="http://doi.org/10.5281/zenodo.10883468" ID-Zenodo-Dep="10883468" httpUri="https://zenodo.org/record/10883468/files/figure.png" pageId="8" pageNumber="944" startId="8.[159,226,876,897]" targetBox="[368,1259,191,855]" targetPageId="8" targetType="figure">
<paragraph id="3F0336C9BB739D5920F22B2389D38BF2" blockId="8.[159,1467,876,977]" pageId="8" pageNumber="944">
<emphasis id="0DC8EADBBB739D5920F22B238B948BA2" bold="true" box="[159,252,876,897]" pageId="8" pageNumber="944">Figure 5.</emphasis>
<taxonomicName id="F8BC4D4ABB739D5921652B238ADD8BA2" authority="Marram̀ &amp; Schult &amp; Kriwe, 2019" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[264,437,876,897]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="8" pageNumber="944" phylum="Chordata" rank="species" species="parva" status="gen. et sp. nov.">
<emphasis id="0DC8EADBBB739D5921652B238ADD8BA2" box="[264,437,876,897]" italics="true" pageId="8" pageNumber="944">Ostarriraja parva</emphasis>
</taxonomicName>
<taxonomicNameLabel id="16FB57A0BB739D5921D02B23893C8BA2" box="[445,596,876,897]" pageId="8" pageNumber="944" rank="species">gen. et sp. nov.</taxonomicNameLabel>
from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097.
<emphasis id="0DC8EADBBB739D59250F2B238E128BA2" bold="true" box="[1378,1402,876,897]" pageId="8" pageNumber="944">A,</emphasis>
closeup of the tail with the anterior part on the left side;
<emphasis id="0DC8EADBBB739D5922CE2BC989D18BB8" bold="true" box="[675,697,902,923]" pageId="8" pageNumber="944">B,</emphasis>
detail of the radials in the pectoral disc;
<emphasis id="0DC8EADBBB739D59243F2BC98F018BB8" bold="true" box="[1106,1129,902,923]" pageId="8" pageNumber="944">C,</emphasis>
close-up of the teeth;
<emphasis id="0DC8EADBBB739D5925272BC98E098BB8" bold="true" box="[1354,1377,902,923]" pageId="8" pageNumber="944">D,</emphasis>
detail of some tail thorns. Abbreviations: mc, Meckel’ s cartilage; pq, palatoquadrate; th, thorns; vc, vertebral centra. The arrows indicate the rostral direction. Scale bars: A–C = 1 mm; D = 0.5 mm.
</paragraph>
</caption>
<paragraph id="3F0336C9BB739D5920F22BB389918F4E" blockId="8.[159,782,1020,1901]" pageId="8" pageNumber="944">
<emphasis id="0DC8EADBBB739D5920F22BB38A658C30" bold="true" box="[159,269,1020,1043]" pageId="8" pageNumber="944">Cranium.</emphasis>
Although the cranium is only partially preserved, it appears antero-posteriorly elongated, longer than wide, with its greatest width at the level of the nasal capsules (
<figureCitation id="A7872A4CBB739D5921222C108AFA8C55" box="[335,402,1119,1142]" captionStart="Figure 3" captionStartId="6.[159,226,780,801]" captionTargetBox="[368,1252,191,759]" captionTargetId="figure-452@6.[365,1262,188,762]" captionTargetPageId="6" captionText="Figure 3. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the head and pectoral region of the holotype under UV light; B, restoration. Abbreviations: ac, antorbital cartilage; cb, 5th ceratobranchial; fpf, fronto-parietal fontanelle; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pa, pectoral arch; pq, palatoquadrate; pro, propterygium; rad, radials; syn, synarcual. Scale bars: 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883464" httpUri="https://zenodo.org/record/10883464/files/figure.png" pageId="8" pageNumber="944">Fig. 3</figureCitation>
). The rostral cartilage is not preserved. Only one of the two nasal capsules is exposed. It appears broad and oval without the kidney-shaped basal fenestra on its antero-medial aspect typically present in
<taxonomicName id="F8BC4D4ABB739D5921772CAC8AC28CD9" authorityName="Günther" authorityYear="1870" box="[282,426,1251,1274]" class="Elasmobranchii" family="Arhynchobatidae" genus="Psammobatis" kingdom="Animalia" order="Rajiformes" pageId="8" pageNumber="944" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB739D5921772CAC8AC28CD9" box="[282,426,1251,1274]" italics="true" pageId="8" pageNumber="944">Psammobatis</emphasis>
</taxonomicName>
,
<taxonomicName id="F8BC4D4ABB739D5921D02CAC89698CD9" authorityName="Whitley" authorityYear="1931" box="[445,513,1251,1274]" class="Elasmobranchii" family="Arhynchobatidae" genus="Irolita" kingdom="Animalia" order="Rajiformes" pageId="8" pageNumber="944" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB739D5921D02CAC89698CD9" box="[445,513,1251,1274]" italics="true" pageId="8" pageNumber="944">Irolita</emphasis>
</taxonomicName>
,
<taxonomicName id="F8BC4D4ABB739D5922792CAC89E78CD9" authorityName="Bigelow &amp; Schroeder" authorityYear="1954" box="[532,655,1251,1274]" class="Elasmobranchii" family="Arhynchobatidae" genus="Pseudoraja" kingdom="Animalia" order="Rajiformes" pageId="8" pageNumber="944" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB739D5922792CAC89E78CD9" box="[532,655,1251,1274]" italics="true" pageId="8" pageNumber="944">Pseudoraja</emphasis>
</taxonomicName>
,
<taxonomicName id="F8BC4D4ABB739D5922CE2CAC886E8CD9" authorityName="Whitley" authorityYear="1939" box="[675,774,1251,1274]" class="Elasmobranchii" family="Arhynchobatidae" genus="Pavoraja" kingdom="Animalia" order="Rajiformes" pageId="8" pageNumber="944" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB739D5922CE2CAC886E8CD9" box="[675,774,1251,1274]" italics="true" pageId="8" pageNumber="944">Pavoraja</emphasis>
</taxonomicName>
,
<taxonomicName id="F8BC4D4ABB739D5920F22D4B8B978D38" authorityName="Ishiyama" authorityYear="1958" box="[159,255,1284,1307]" class="Elasmobranchii" family="Arhynchobatidae" genus="Notoraja" kingdom="Animalia" order="Rajiformes" pageId="8" pageNumber="944" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB739D5920F22D4B8B978D38" box="[159,255,1284,1307]" italics="true" pageId="8" pageNumber="944">Notoraja</emphasis>
</taxonomicName>
,
<emphasis id="0DC8EADBBB739D5921792D4B8AE08D38" box="[276,392,1284,1307]" italics="true" pageId="8" pageNumber="944">Fenestraja</emphasis>
and
<taxonomicName id="F8BC4D4ABB739D5921A12D4B89228D38" authorityName="de Buen" authorityYear="1959" box="[460,586,1284,1307]" class="Elasmobranchii" family="Rajidae" genus="Gurgesiella" kingdom="Animalia" order="Rajiformes" pageId="8" pageNumber="944" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB739D5921A12D4B89228D38" box="[460,586,1284,1307]" italics="true" pageId="8" pageNumber="944">Gurgesiella</emphasis>
</taxonomicName>
(see
<bibRefCitation id="5B2D4B38BB739D5922FF2D4B8A318D1F" author="McEachran, J. D. &amp; Miyake, T." pageId="8" pageNumber="944" refId="ref17306" refString="McEachran, J. D. &amp; Miyake, T. 1990 a. Phylogenetic interrelationships of skates: a working hypothesis (Chondrichthyes: Rajoidei). Pp. 285 - 304 in H. L. Pratt Jr., S. H. Gruber &amp; T. Taniuchi (eds) Elasmobranchs as living resources: advances in the biology, ecology, systematics, and the status of the fisheries. NOAA Tech Report NMFS 90." type="journal volume" year="1990">McEachran &amp; Miyake 1990a</bibRefCitation>
;
<bibRefCitation id="5B2D4B38BB739D5921072D6A89EE8D1F" author="McEachran, J. D. &amp; Dunn, K. A." box="[362,646,1317,1340]" pageId="8" pageNumber="944" pagination="271 - 290" refId="ref17223" refString="McEachran, J. D. &amp; Dunn, K. A. 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia, 1998, 271 - 290." type="journal article" year="1998">McEachran &amp; Dunn 1998</bibRefCitation>
) but mostly resembling the condition seen in
<emphasis id="0DC8EADBBB739D5922482D0989FE8D7E" box="[549,662,1350,1373]" italics="true" pageId="8" pageNumber="944">Amblyraja</emphasis>
(
<figureCitation id="A7872A4CBB739D5922C02D098BD98D5D" captionStart="Figure 4" captionStartId="7.[159,226,1421,1442]" captionTargetBox="[368,1259,200,1401]" captionTargetId="figure-120@7.[365,1262,188,1404]" captionTargetPageId="7" captionText="Figure 4. Anatomical details of some of the living skate representatives used for comparisons. A–D, Amblyraja sp., UNIVIE EMRG-Chond-H1, cleared and stained specimen; E, Raja clavata Linnaeus, 1758, UNIVIE EMRG-H2, micro-CT scan of the tail; A, overall view of the specimen in ventral view; B, close-up of the head and pectoral region; C, close-up of the pelvic girdle and fins; D, detail of the propterygial radials near the head region; note their reduced catenated calcification; E, detail of the vertebral column on the tail of UNIVIE EMRG-H2 in ventral view, showing the prismatic calcification of the cartilage forming the haemal arches. Abbreviations: ac, antorbital cartilage; bas, basipterygium; cb, 5th ceratobranchial; cr, compound radial; ha, haemal arches; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pq, palatoquadrate; pro, propterygium; prp, prepelvic process; pub, puboischiadic bar; ro, rostral cartilage; sca, scapulocoracoid; syn, synarcual; th, thorns. Scale bars: A–C = 20 mm; D = 10mm; E= 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883466" httpUri="https://zenodo.org/record/10883466/files/figure.png" pageId="8" pageNumber="944">Fig. 4A, B</figureCitation>
). Since the specimen is exposed in ventral view, the presence and morphology of the preorbital processes remain ambguous (= preorbital flanges of
<bibRefCitation id="5B2D4B38BB739D5922192DE68A2C8DC2" author="McEachran, J. D. &amp; Miyake, T." pageId="8" pageNumber="944" refId="ref17306" refString="McEachran, J. D. &amp; Miyake, T. 1990 a. Phylogenetic interrelationships of skates: a working hypothesis (Chondrichthyes: Rajoidei). Pp. 285 - 304 in H. L. Pratt Jr., S. H. Gruber &amp; T. Taniuchi (eds) Elasmobranchs as living resources: advances in the biology, ecology, systematics, and the status of the fisheries. NOAA Tech Report NMFS 90." type="journal volume" year="1990">McEachran &amp; Miyake 1990a</bibRefCitation>
). The neurocranium is narrower at the level of the orbital region. The otic capsules are short and robust. Although the specimen shows the ventral side in the main slab, it is possible to recognize (possibly due to taphonomic compression) the outline of the posterior portion of the fronto-parietal fontanelle, whose posterior margin appears concave and does not display any indentation. The antorbital cartilage is massive, unbranched and arched (
<figureCitation id="A7872A4CBB739D5921C32E9D8A878ECA" box="[430,495,1746,1769]" captionStart="Figure 3" captionStartId="6.[159,226,780,801]" captionTargetBox="[368,1252,191,759]" captionTargetId="figure-452@6.[365,1262,188,762]" captionTargetPageId="6" captionText="Figure 3. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the head and pectoral region of the holotype under UV light; B, restoration. Abbreviations: ac, antorbital cartilage; cb, 5th ceratobranchial; fpf, fronto-parietal fontanelle; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pa, pectoral arch; pq, palatoquadrate; pro, propterygium; rad, radials; syn, synarcual. Scale bars: 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883464" httpUri="https://zenodo.org/record/10883464/files/figure.png" pageId="8" pageNumber="944">Fig. 3</figureCitation>
), and its maximum width is at the level of the articulation with the postero-lateral aspect of the nasal capsule. It tapers distally and extends laterally articulating with the third segment of the propterygium, resembling the condition of skates (
<figureCitation id="A7872A4CBB739D5922FA2F1989818F4E" box="[663,745,1878,1901]" captionStart="Figure 4" captionStartId="7.[159,226,1421,1442]" captionTargetBox="[368,1259,200,1401]" captionTargetId="figure-120@7.[365,1262,188,1404]" captionTargetPageId="7" captionText="Figure 4. Anatomical details of some of the living skate representatives used for comparisons. A–D, Amblyraja sp., UNIVIE EMRG-Chond-H1, cleared and stained specimen; E, Raja clavata Linnaeus, 1758, UNIVIE EMRG-H2, micro-CT scan of the tail; A, overall view of the specimen in ventral view; B, close-up of the head and pectoral region; C, close-up of the pelvic girdle and fins; D, detail of the propterygial radials near the head region; note their reduced catenated calcification; E, detail of the vertebral column on the tail of UNIVIE EMRG-H2 in ventral view, showing the prismatic calcification of the cartilage forming the haemal arches. Abbreviations: ac, antorbital cartilage; bas, basipterygium; cb, 5th ceratobranchial; cr, compound radial; ha, haemal arches; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pq, palatoquadrate; pro, propterygium; prp, prepelvic process; pub, puboischiadic bar; ro, rostral cartilage; sca, scapulocoracoid; syn, synarcual; th, thorns. Scale bars: A–C = 20 mm; D = 10mm; E= 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883466" httpUri="https://zenodo.org/record/10883466/files/figure.png" pageId="8" pageNumber="944">Fig. 4B</figureCitation>
).
</paragraph>
<paragraph id="3F0336C9BB739D5923212BB38EF78E66" blockId="8.[844,1467,1020,1605]" pageId="8" pageNumber="944">
<emphasis id="0DC8EADBBB739D5923212BB38F3F8C30" bold="true" box="[844,1111,1020,1043]" pageId="8" pageNumber="944">Jaws and hyoid arch.</emphasis>
Only the right hemi-jaws are preserved. The palatoquadrate is broadly arched, labio-lingually compressed, and slightly smaller and narrower than the Meckel’ s cartilage (
<figureCitation id="A7872A4CBB739D5924E02C108FA78C55" box="[1165,1231,1119,1142]" captionStart="Figure 3" captionStartId="6.[159,226,780,801]" captionTargetBox="[368,1252,191,759]" captionTargetId="figure-452@6.[365,1262,188,762]" captionTargetPageId="6" captionText="Figure 3. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the head and pectoral region of the holotype under UV light; B, restoration. Abbreviations: ac, antorbital cartilage; cb, 5th ceratobranchial; fpf, fronto-parietal fontanelle; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pa, pectoral arch; pq, palatoquadrate; pro, propterygium; rad, radials; syn, synarcual. Scale bars: 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883464" httpUri="https://zenodo.org/record/10883464/files/figure.png" pageId="8" pageNumber="944">Fig. 3</figureCitation>
). The palatoquadrate slightly tapers towards the symphysis, and possesses a strong condyle that articulates with the Meckel’ s cartilage at the mandibular articular fossa. The Meckel’ s cartilage is stouter and broader than the palatoquadrate. Its antimeres are robust, not tapering, and are separated at the symphysis. There are no labial cartilages. The hyomandibulae are narrow and elongate, enlarged and stout proximally at the articulation with the otic region of the neurocranium, and tapering distally towards their articulation with the Meckel’ s cartilage. With the exception of only the fifth pair of ceratobranchials, the ventral gill arch skeleton of
<taxonomicName id="F8BC4D4ABB739D5924672DA38FED8E20" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[1034,1157,1516,1539]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="8" pageNumber="944" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB739D5924672DA38FED8E20" box="[1034,1157,1516,1539]" italics="true" pageId="8" pageNumber="944">Ostarriraja</emphasis>
</taxonomicName>
is not preserved. However, the fifth ceratobranchials are long and straight, and articulate with the anterior margin of scapulocoracoid.
</paragraph>
<paragraph id="3F0336C9BB739D5B23212E208A268936" blockId="8.[844,1467,1647,1901]" lastBlockId="10.[159,781,189,277]" lastPageId="10" lastPageNumber="946" pageId="8" pageNumber="944">
<emphasis id="0DC8EADBBB739D5923212E208FB98EA5" bold="true" box="[844,1233,1647,1670]" pageId="8" pageNumber="944">Synarcual and vertebral column.</emphasis>
The synarcual cartilage (
<figureCitation id="A7872A4CBB739D5923E32EDF88B98E84" box="[910,977,1680,1703]" captionStart="Figure 3" captionStartId="6.[159,226,780,801]" captionTargetBox="[368,1252,191,759]" captionTargetId="figure-452@6.[365,1262,188,762]" captionTargetPageId="6" captionText="Figure 3. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the head and pectoral region of the holotype under UV light; B, restoration. Abbreviations: ac, antorbital cartilage; cb, 5th ceratobranchial; fpf, fronto-parietal fontanelle; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pa, pectoral arch; pq, palatoquadrate; pro, propterygium; rad, radials; syn, synarcual. Scale bars: 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883464" httpUri="https://zenodo.org/record/10883464/files/figure.png" pageId="8" pageNumber="944">Fig. 3</figureCitation>
) is strongly calcified and tube-shaped, and its morphology is consistent with that of skates (see
<bibRefCitation id="5B2D4B38BB739D5923212E9D888E8ECA" author="Claeson, K. M." box="[844,998,1746,1769]" pageId="8" pageNumber="944" pagination="121 - 126" refId="ref14565" refString="Claeson, K. M. 2008. Variation of the synarcual in the California Ray, Raja inornata (Elasmobranchii: Rajidae). Acta Geologica Polonica, 58, 121 - 126." type="journal article" year="2008">Claeson 2008</bibRefCitation>
,
<bibRefCitation id="5B2D4B38BB739D5923962E9D8F588ECA" author="Claeson, K. M." box="[1019,1072,1746,1769]" pageId="8" pageNumber="944" pagination="1444 - 1463" refId="ref14600" refString="Claeson, K. M. 2011. The synarcual cartilage of batoids with emphasis on the synarcual of Rajidae. Journal of Morphology, 272, 1444 - 1463." type="journal article" year="2011">2011</bibRefCitation>
). Anteriorly, the synarcual articulates with the occipital condyles of the chondrocranium through a subrectangular synarcual lip which rests inside the foramen magnum of the chondrocranium, a condition considered derived in skates (
<bibRefCitation id="5B2D4B38BB739D58249F2F198B888DC3" author="Aschliman, N. C. &amp; Claeson, K. M. &amp; McEachran, J. D." lastPageId="9" lastPageNumber="945" pageId="8" pageNumber="944" refId="ref13385" refString="Aschliman, N. C., Claeson, K. M. &amp; McEachran, J. D. 2012 a. Phylogeny of Batoidea. Pp. 57 - 96 in J. C. Carrier, J. A. Musick &amp; M. R. Heithaus (eds) Biology of sharks and their relatives. 2 nd edition. CRC Press, Boca Raton." type="book" year="2012">
Aschliman
<emphasis id="0DC8EADBBB739D5925142F198EDC8F4E" box="[1401,1460,1878,1901]" italics="true" pageId="8" pageNumber="944">et al</emphasis>
. 2012a
</bibRefCitation>
). The two lateral occipital cotyles of the synarcual articulate with the occipital condyles of the chondrocranium. The synarcual extends posteriorly to the level of the shoulder girdle. The pectoral arch, formed by the fusion of suprascapulae to the dorsal median crest of the synarcual in skates (
<bibRefCitation id="5B2D4B38BB729D58220D2E21886D8EA6" author="Claeson, K. M." box="[608,773,1646,1669]" pageId="9" pageNumber="945" pagination="121 - 126" refId="ref14565" refString="Claeson, K. M. 2008. Variation of the synarcual in the California Ray, Raja inornata (Elasmobranchii: Rajidae). Acta Geologica Polonica, 58, 121 - 126." type="journal article" year="2008">Claeson 2008</bibRefCitation>
;
<bibRefCitation id="5B2D4B38BB729D5820F22EC08ACA8E85" author="Aschliman, N. C. &amp; Claeson, K. M. &amp; McEachran, J. D." box="[159,418,1679,1702]" pageId="9" pageNumber="945" refId="ref13385" refString="Aschliman, N. C., Claeson, K. M. &amp; McEachran, J. D. 2012 a. Phylogeny of Batoidea. Pp. 57 - 96 in J. C. Carrier, J. A. Musick &amp; M. R. Heithaus (eds) Biology of sharks and their relatives. 2 nd edition. CRC Press, Boca Raton." type="book" year="2012">
Aschliman
<emphasis id="0DC8EADBBB729D5821702EC08A388E85" box="[285,336,1679,1702]" italics="true" pageId="9" pageNumber="945">et al</emphasis>
. 2012a
</bibRefCitation>
), is partially visible posterior to the scapulocoracoid bar. However, the dorsal median crest of the synarcual and the lateral stays are not exposed in our specimen. It is not possible to detect the number of fused vertebrae that form the synarcual, or the spinal nerve foramina. Two or three unfused individual vertebral centra can be seen near the posterior margin of the synarcual. At least 13–15 trunk vertebrae (from the first distinguishable centrum to the anterior margin of the puboischiadic bar) can be recognized. About 50 vertebrae are visible from the anterior margin of the puboischiadic bar to the last portion of the tail although this number was originally higher since the distal tip of the tail is not preserved. However, it is likely that the total number of predorsal vertebrae might have been about 65–70. The vertebral centra are strongly calcified, subrectangular in shape and antero-posteriorly elongated. The vertebrae of the tail appear to be surrounded by small calcified tesserae of polygonal shape (
<figureCitation id="A7872A4CBB729D5823F22F19889D8F4E" box="[927,1013,1878,1901]" captionStart="Figure 5" captionStartId="8.[159,226,876,897]" captionTargetBox="[368,1259,191,855]" captionTargetId="figure-473@8.[365,1262,188,858]" captionTargetPageId="8" captionText="Figure 5. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the tail with the anterior part on the left side; B, detail of the radials in the pectoral disc; C, close-up of the teeth; D, detail of some tail thorns. Abbreviations: mc, Meckel’s cartilage; pq, palatoquadrate; th, thorns; vc, vertebral centra. The arrows indicate the rostral direction. Scale bars: A–C = 1 mm; D = 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883468" httpUri="https://zenodo.org/record/10883468/files/figure.png" pageId="9" pageNumber="945">Fig. 5A</figureCitation>
), which probably represent the tesserae that form the prismatic calcification of the modified neural and haemal arches in modern skates (
<figureCitation id="A7872A4CBB719D5B22C52892899688D7" box="[680,766,221,244]" captionStart="Figure 4" captionStartId="7.[159,226,1421,1442]" captionTargetBox="[368,1259,200,1401]" captionTargetId="figure-120@7.[365,1262,188,1404]" captionTargetPageId="7" captionText="Figure 4. Anatomical details of some of the living skate representatives used for comparisons. A–D, Amblyraja sp., UNIVIE EMRG-Chond-H1, cleared and stained specimen; E, Raja clavata Linnaeus, 1758, UNIVIE EMRG-H2, micro-CT scan of the tail; A, overall view of the specimen in ventral view; B, close-up of the head and pectoral region; C, close-up of the pelvic girdle and fins; D, detail of the propterygial radials near the head region; note their reduced catenated calcification; E, detail of the vertebral column on the tail of UNIVIE EMRG-H2 in ventral view, showing the prismatic calcification of the cartilage forming the haemal arches. Abbreviations: ac, antorbital cartilage; bas, basipterygium; cb, 5th ceratobranchial; cr, compound radial; ha, haemal arches; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pq, palatoquadrate; pro, propterygium; prp, prepelvic process; pub, puboischiadic bar; ro, rostral cartilage; sca, scapulocoracoid; syn, synarcual; th, thorns. Scale bars: A–C = 20 mm; D = 10mm; E= 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883466" httpUri="https://zenodo.org/record/10883466/files/figure.png" pageId="10" pageNumber="946">Fig. 4E</figureCitation>
). Ribs are absent.
</paragraph>
<caption id="6BC36641BB729D5820F22AD588188AC7" ID-DOI="http://doi.org/10.5281/zenodo.10883470" ID-Zenodo-Dep="10883470" httpUri="https://zenodo.org/record/10883470/files/figure.png" pageId="9" pageNumber="945" startId="9.[159,226,666,687]" targetBox="[368,1249,191,645]" targetPageId="9" targetType="figure">
<paragraph id="3F0336C9BB729D5820F22AD588188AC7" blockId="9.[159,1467,666,740]" pageId="9" pageNumber="945">
<emphasis id="0DC8EADBBB729D5820F22AD58B958A8C" bold="true" box="[159,253,666,687]" pageId="9" pageNumber="945">Figure 6.</emphasis>
<taxonomicName id="F8BC4D4ABB729D5821652AD58ADD8A8C" authority="Marram̀ &amp; Schult &amp; Kriwe, 2019" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[264,437,666,687]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="9" pageNumber="945" phylum="Chordata" rank="species" species="parva" status="gen. et sp. nov.">
<emphasis id="0DC8EADBBB729D5821652AD58ADD8A8C" box="[264,437,666,687]" italics="true" pageId="9" pageNumber="945">Ostarriraja parva</emphasis>
</taxonomicName>
<taxonomicNameLabel id="16FB57A0BB729D5821D32AD5893F8A8C" box="[446,599,666,687]" pageId="9" pageNumber="945" rank="species">gen. et sp. nov.</taxonomicNameLabel>
from the early Miocene of Upper Austria.
<emphasis id="0DC8EADBBB729D58246E2AD58F738A8C" bold="true" box="[1027,1051,666,687]" pageId="9" pageNumber="945">A,</emphasis>
NHMW 2005z0283/0097, close-up of the pelvic girdle and fins of the holotype under UV light;
<emphasis id="0DC8EADBBB729D5822A42AFB89B78AEA" bold="true" box="[713,735,692,713]" pageId="9" pageNumber="945">B,</emphasis>
restoration. Abbreviations: bas, basipterygium; cr, compound radial; prp, prepelvic process; pub, puboischiadic bar; rad, radials. Scale bars: 10 mm.
</paragraph>
</caption>
<caption id="6BC36641BB729D5820F22D248FE98DB9" ID-DOI="http://doi.org/10.5281/zenodo.10883474" ID-Zenodo-Dep="10883474" httpUri="https://zenodo.org/record/10883474/files/figure.png" pageId="9" pageNumber="945" startId="9.[159,226,1387,1408]" targetBox="[368,1259,803,1363]" targetPageId="9" targetType="figure">
<paragraph id="3F0336C9BB729D5820F22D248FE98DB9" blockId="9.[159,1466,1387,1435]" pageId="9" pageNumber="945">
<emphasis id="0DC8EADBBB729D5820F22D248A688DA3" bold="true" box="[159,256,1387,1408]" pageId="9" pageNumber="945">Figure 7.</emphasis>
<taxonomicName id="F8BC4D4ABB729D5821612D248AD58DA3" authority="Marram̀ &amp; Schult &amp; Kriwe, 2019" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[268,445,1387,1408]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="9" pageNumber="945" phylum="Chordata" rank="species" species="parva" status="gen. et sp. nov.">
<emphasis id="0DC8EADBBB729D5821612D248AD58DA3" box="[268,445,1387,1408]" italics="true" pageId="9" pageNumber="945">Ostarriraja parva</emphasis>
</taxonomicName>
<taxonomicNameLabel id="16FB57A0BB729D5821A52D2489038DA3" box="[456,619,1387,1408]" pageId="9" pageNumber="945" rank="species">gen. et sp. nov.</taxonomicNameLabel>
from the early Miocene of Upper Austria. Three isolated teeth from the holotype NHMW 2005z0283/0097 in
<emphasis id="0DC8EADBBB729D5821DA2DCA8AA68DB9" bold="true" box="[439,462,1413,1434]" pageId="9" pageNumber="945">A,</emphasis>
occlusal;
<emphasis id="0DC8EADBBB729D58225F2DCA89208DB9" bold="true" box="[562,584,1413,1434]" pageId="9" pageNumber="945">B,</emphasis>
lingual;
<emphasis id="0DC8EADBBB729D5822CD2DCA89DF8DB9" bold="true" box="[672,695,1413,1434]" pageId="9" pageNumber="945">C,</emphasis>
labial; and
<emphasis id="0DC8EADBBB729D5823412DCA882C8DB9" bold="true" box="[812,836,1413,1434]" pageId="9" pageNumber="945">D,</emphasis>
lateral view. Scale bar: 200 µm.
</paragraph>
</caption>
<paragraph id="3F0336C9BB719D5B20F229718F8F88D7" blockId="10.[159,782,318,1901]" lastBlockId="10.[844,1467,189,244]" pageId="10" pageNumber="946">
<emphasis id="0DC8EADBBB719D5B20F229718A888976" bold="true" box="[159,480,318,341]" pageId="10" pageNumber="946">Pectoral fins and girdle.</emphasis>
The scapulocoracoid is formed by a single straight and robust transverse structure, located just ventral to the synarcual arch (
<figureCitation id="A7872A4CBB719D5B22D72930899589B5" box="[698,765,383,406]" captionStart="Figure 3" captionStartId="6.[159,226,780,801]" captionTargetBox="[368,1252,191,759]" captionTargetId="figure-452@6.[365,1262,188,762]" captionTargetPageId="6" captionText="Figure 3. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the head and pectoral region of the holotype under UV light; B, restoration. Abbreviations: ac, antorbital cartilage; cb, 5th ceratobranchial; fpf, fronto-parietal fontanelle; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pa, pectoral arch; pq, palatoquadrate; pro, propterygium; rad, radials; syn, synarcual. Scale bars: 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883464" httpUri="https://zenodo.org/record/10883464/files/figure.png" pageId="10" pageNumber="946">Fig. 3</figureCitation>
). The scapulocoracoid articulates anteriorly with the fifth pair of ceratobranchials. The lateral aspect of the scapulocoracoid appears to be large, and the distance between pro- and mesocondyles is less than the distance between meso- and metacondyles, contrary to some skates like
<emphasis id="0DC8EADBBB719D5B20F22A0D8A788A7A" box="[159,272,578,601]" italics="true" pageId="10" pageNumber="946">Amblyraja</emphasis>
, in which the distance between condyles is about equal (
<figureCitation id="A7872A4CBB719D5B21582A2C8AE38A59" box="[309,395,611,634]" captionStart="Figure 4" captionStartId="7.[159,226,1421,1442]" captionTargetBox="[368,1259,200,1401]" captionTargetId="figure-120@7.[365,1262,188,1404]" captionTargetPageId="7" captionText="Figure 4. Anatomical details of some of the living skate representatives used for comparisons. A–D, Amblyraja sp., UNIVIE EMRG-Chond-H1, cleared and stained specimen; E, Raja clavata Linnaeus, 1758, UNIVIE EMRG-H2, micro-CT scan of the tail; A, overall view of the specimen in ventral view; B, close-up of the head and pectoral region; C, close-up of the pelvic girdle and fins; D, detail of the propterygial radials near the head region; note their reduced catenated calcification; E, detail of the vertebral column on the tail of UNIVIE EMRG-H2 in ventral view, showing the prismatic calcification of the cartilage forming the haemal arches. Abbreviations: ac, antorbital cartilage; bas, basipterygium; cb, 5th ceratobranchial; cr, compound radial; ha, haemal arches; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pq, palatoquadrate; pro, propterygium; prp, prepelvic process; pub, puboischiadic bar; ro, rostral cartilage; sca, scapulocoracoid; syn, synarcual; th, thorns. Scale bars: A–C = 20 mm; D = 10mm; E= 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883466" httpUri="https://zenodo.org/record/10883466/files/figure.png" pageId="10" pageNumber="946">Fig. 4B</figureCitation>
). The presence of the bridge and the postventral fenestra cannot be detected in
<taxonomicName id="F8BC4D4ABB719D5B20F22AEB8A728A98" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[159,282,676,699]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B20F22AEB8A728A98" box="[159,282,676,699]" italics="true" pageId="10" pageNumber="946">Ostarriraja</emphasis>
</taxonomicName>
. The propterygium is long and arched, and gradually tapers distally. It is segmented and at least four segments can be recognized; the proximal one is enlarged and articulates with the procondyle on the anterior portion of the lateral margin of the scapulocoracoid. The third propterygial segment articulates mesially with the antorbital cartilage of the neurocranium. Due to the incomplete preservation of the anterior portion of the body it is not clear whether the propterygium extends anteriorly to the rostral node. The mesopterygium is small, shorter than the pro- and metapterygium. It is a single ovoid element and its external margin is more or less straight to slightly convex, apparently not fused to the radials. The metapterygium is arched and its length is less than that of the propterygium. The metapterygium gradually tapers distally, where it segments at least once. There are about 86 pectoral radials. Of these, 33 are propterygial, 10 mesopterygial and 32 metapterygial. Moreover, about 11 radials directly articulate with the scapulocoracoid between the mesopterygium and metapterygium, resembling the typical condition of skates,
<taxonomicName id="F8BC4D4ABB719D5B20F22D018B8D8D46" box="[159,229,1358,1381]" class="Elasmobranchii" family="Pristidae" genus="Pristis" kingdom="Animalia" order="Rhinopristiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B20F22D018B8D8D46" box="[159,229,1358,1381]" italics="true" pageId="10" pageNumber="946">Pristis</emphasis>
</taxonomicName>
, panrays and guitarfishes (
<bibRefCitation id="5B2D4B38BB719D5B22772D0189DB8D46" author="Garman, S." box="[538,691,1358,1381]" pageId="10" pageNumber="946" pagination="1 - 528" refId="ref15048" refString="Garman, S. 1913. The Plagiostoma (sharks, skates, and rays). Memoirs of the Museum of Comparative Zoology of Harvard College, 36, 1 - 528." type="journal article" year="1913">Garman 1913</bibRefCitation>
, pls 64 and 65;
<bibRefCitation id="5B2D4B38BB719D5B20922D208AFB8DA5" author="Nishida, K." box="[255,403,1391,1414]" pageId="10" pageNumber="946" pagination="1 - 108" refId="ref17821" refString="Nishida, K. 1990. Phylogeny of the suborder Myliobatoidei. Hokkaido University Fisheries Memoir, 37, 1 - 108." type="journal article" year="1990">Nishida 1990</bibRefCitation>
, fig. 32; McEachran
<emphasis id="0DC8EADBBB719D5B22E72D2089D68DA5" box="[650,702,1391,1414]" italics="true" pageId="10" pageNumber="946">et al</emphasis>
. 1996, fig. 9;
<bibRefCitation id="5B2D4B38BB719D5B20822DC08A9D8D85" author="Aschliman, N. C. &amp; Claeson, K. M. &amp; McEachran, J. D." box="[239,501,1423,1446]" pageId="10" pageNumber="946" refId="ref13385" refString="Aschliman, N. C., Claeson, K. M. &amp; McEachran, J. D. 2012 a. Phylogeny of Batoidea. Pp. 57 - 96 in J. C. Carrier, J. A. Musick &amp; M. R. Heithaus (eds) Biology of sharks and their relatives. 2 nd edition. CRC Press, Boca Raton." type="book" year="2012">
Aschliman
<emphasis id="0DC8EADBBB719D5B21032DC08AC18D85" box="[366,425,1423,1446]" italics="true" pageId="10" pageNumber="946">et al.</emphasis>
2012a
</bibRefCitation>
). Each pectoral radial is composed of at least five segments. However, since the external margin of the disc is incompletely preserved, possibly due to the incomplete mineralization of the distal-most radial cartilages in this presumably late juvenile specimen, it is possible that the number of segments was much higher. The anterior-most propterygial radials bifurcate distally at least once. The radials of
<taxonomicName id="F8BC4D4ABB719D5B20F22EDC8A728E89" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[159,282,1683,1706]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B20F22EDC8A728E89" box="[159,282,1683,1706]" italics="true" pageId="10" pageNumber="946">Ostarriraja</emphasis>
</taxonomicName>
are calcified in chain-like patterns (
<figureCitation id="A7872A4CBB719D5B22C72EDC89958E89" box="[682,765,1683,1706]" captionStart="Figure 5" captionStartId="8.[159,226,876,897]" captionTargetBox="[368,1259,191,855]" captionTargetId="figure-473@8.[365,1262,188,858]" captionTargetPageId="8" captionText="Figure 5. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the tail with the anterior part on the left side; B, detail of the radials in the pectoral disc; C, close-up of the teeth; D, detail of some tail thorns. Abbreviations: mc, Meckel’s cartilage; pq, palatoquadrate; th, thorns; vc, vertebral centra. The arrows indicate the rostral direction. Scale bars: A–C = 1 mm; D = 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883468" httpUri="https://zenodo.org/record/10883468/files/figure.png" pageId="10" pageNumber="946">Fig. 5B</figureCitation>
), forming the so-called ‘catenated calcification’ typical of batoids with undulatory swimming mode, including skates and most of the benthic stingrays (
<bibRefCitation id="5B2D4B38BB719D5B22E62EBA8A258F0F" author="Schaefer, J. T. &amp; Summers, A. P." pageId="10" pageNumber="946" pagination="298 - 313" refId="ref18553" refString="Schaefer, J. T. &amp; Summers, A. P. 2005. Batoid wing skeletal structure: novel morphologies, mechanical implications, and phylogenetic patterns. Journal of Morphology, 264, 298 - 313." type="journal article" year="2005">Schaefer &amp; Summers 2005</bibRefCitation>
). Moreover, as observed in modern skates (
<figureCitation id="A7872A4CBB719D5B209A2F798A388F6E" box="[247,336,1846,1869]" captionStart="Figure 4" captionStartId="7.[159,226,1421,1442]" captionTargetBox="[368,1259,200,1401]" captionTargetId="figure-120@7.[365,1262,188,1404]" captionTargetPageId="7" captionText="Figure 4. Anatomical details of some of the living skate representatives used for comparisons. A–D, Amblyraja sp., UNIVIE EMRG-Chond-H1, cleared and stained specimen; E, Raja clavata Linnaeus, 1758, UNIVIE EMRG-H2, micro-CT scan of the tail; A, overall view of the specimen in ventral view; B, close-up of the head and pectoral region; C, close-up of the pelvic girdle and fins; D, detail of the propterygial radials near the head region; note their reduced catenated calcification; E, detail of the vertebral column on the tail of UNIVIE EMRG-H2 in ventral view, showing the prismatic calcification of the cartilage forming the haemal arches. Abbreviations: ac, antorbital cartilage; bas, basipterygium; cb, 5th ceratobranchial; cr, compound radial; ha, haemal arches; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pq, palatoquadrate; pro, propterygium; prp, prepelvic process; pub, puboischiadic bar; ro, rostral cartilage; sca, scapulocoracoid; syn, synarcual; th, thorns. Scale bars: A–C = 20 mm; D = 10mm; E= 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883466" httpUri="https://zenodo.org/record/10883466/files/figure.png" pageId="10" pageNumber="946">Fig. 4D</figureCitation>
; see also
<bibRefCitation id="5B2D4B38BB719D5B21A22F79886E8F6E" author="Schaefer, J. T. &amp; Summers, A. P." box="[463,774,1846,1869]" pageId="10" pageNumber="946" pagination="298 - 313" refId="ref18553" refString="Schaefer, J. T. &amp; Summers, A. P. 2005. Batoid wing skeletal structure: novel morphologies, mechanical implications, and phylogenetic patterns. Journal of Morphology, 264, 298 - 313." type="journal article" year="2005">Schaefer &amp; Summers 2005</bibRefCitation>
, fig. 2), the calcification is further reduced in
<taxonomicName id="F8BC4D4ABB719D5B232128F288AF88F7" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[844,967,189,212]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B232128F288AF88F7" box="[844,967,189,212]" italics="true" pageId="10" pageNumber="946">Ostarriraja</emphasis>
</taxonomicName>
, since it consists of a single chain on the dorsal and ventral sides in all radials.
</paragraph>
<paragraph id="3F0336C9BB719D5B232129518E7E8EA9" blockId="10.[844,1467,286,1674]" pageId="10" pageNumber="946">
<emphasis id="0DC8EADBBB719D5B232129518F3D8916" bold="true" box="[844,1109,286,309]" pageId="10" pageNumber="946">Pelvic fins and girdle.</emphasis>
As observed in modern skates (
<figureCitation id="A7872A4CBB719D5B2338297188C08976" box="[853,936,318,341]" captionStart="Figure 4" captionStartId="7.[159,226,1421,1442]" captionTargetBox="[368,1259,200,1401]" captionTargetId="figure-120@7.[365,1262,188,1404]" captionTargetPageId="7" captionText="Figure 4. Anatomical details of some of the living skate representatives used for comparisons. A–D, Amblyraja sp., UNIVIE EMRG-Chond-H1, cleared and stained specimen; E, Raja clavata Linnaeus, 1758, UNIVIE EMRG-H2, micro-CT scan of the tail; A, overall view of the specimen in ventral view; B, close-up of the head and pectoral region; C, close-up of the pelvic girdle and fins; D, detail of the propterygial radials near the head region; note their reduced catenated calcification; E, detail of the vertebral column on the tail of UNIVIE EMRG-H2 in ventral view, showing the prismatic calcification of the cartilage forming the haemal arches. Abbreviations: ac, antorbital cartilage; bas, basipterygium; cb, 5th ceratobranchial; cr, compound radial; ha, haemal arches; hyo, hyomandibula; mc, Meckel’s cartilage; mes, mesopterygium; met, metapterygium; nc, nasal capsule; pq, palatoquadrate; pro, propterygium; prp, prepelvic process; pub, puboischiadic bar; ro, rostral cartilage; sca, scapulocoracoid; syn, synarcual; th, thorns. Scale bars: A–C = 20 mm; D = 10mm; E= 5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883466" httpUri="https://zenodo.org/record/10883466/files/figure.png" pageId="10" pageNumber="946">Fig. 4C</figureCitation>
; see also
<bibRefCitation id="5B2D4B38BB719D5B247529718FA38976" author="Compagno, L. J. V." box="[1048,1227,318,341]" pageId="10" pageNumber="946" refId="ref14739" refString="Compagno, L. J. V. 1999. Endoskeleton. Pp. 69 - 92 in W. C. Hamlett (ed.) Sharks, skates, and rays: the biology of elasmobranch fishes. Johns Hopkins University Press, Baltimore." type="book" year="1999">Compagno 1999</bibRefCitation>
;
<bibRefCitation id="5B2D4B38BB719D5B24B129718EDB8976" author="Holst, R. J. &amp; Bone, Q." box="[1244,1459,318,341]" pageId="10" pageNumber="946" pagination="105 - 108" refId="ref15839" refString="Holst, R. J. &amp; Bone, Q. 1993. On bipedalism in skates and rays. Philosophical Transactions of the Royal Society of London, B, 339, 105 - 108." type="journal article" year="1993">Holst &amp; Bone 1993</bibRefCitation>
, fig. 1;
<bibRefCitation id="5B2D4B38BB719D5B23F429108FD08955" author="Lucifora, L. O. &amp; Vassallo, A. I." box="[921,1208,351,374]" pageId="10" pageNumber="946" pagination="35 - 41" refId="ref16661" refString="Lucifora, L. O. &amp; Vassallo, A. I. 2002. Walking in skates (Chondrichthyes, Rajidae): anatomy, behaviour and analogies to tetrapod locomotion. Biological Journal of the Linnean Society, 77, 35 - 41." type="journal article" year="2002">Lucifora &amp; Vassallo 2002</bibRefCitation>
, fig. 2), the pelvic fins of
<taxonomicName id="F8BC4D4ABB719D5B23012930888F89B5" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[876,999,383,406]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B23012930888F89B5" box="[876,999,383,406]" italics="true" pageId="10" pageNumber="946">Ostarriraja</emphasis>
</taxonomicName>
are typically bilobed, characterized by the presence of distinct anterior and posterior lobes (
<figureCitation id="A7872A4CBB719D5B250729EF8EC38994" box="[1386,1451,416,439]" captionStart="Figure 6" captionStartId="9.[159,226,666,687]" captionTargetBox="[368,1249,191,645]" captionTargetId="figure-239@9.[365,1261,188,648]" captionTargetPageId="9" captionText="Figure 6. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. A, NHMW 2005z0283/0097, close-up of the pelvic girdle and fins of the holotype under UV light; B, restoration. Abbreviations: bas, basipterygium; cr, compound radial; prp, prepelvic process; pub, puboischiadic bar; rad, radials. Scale bars: 10mm." figureDoi="http://doi.org/10.5281/zenodo.10883470" httpUri="https://zenodo.org/record/10883470/files/figure.png" pageId="10" pageNumber="946">Fig. 6</figureCitation>
). The anterior lobe is supported by a rod-like compound radial (articulated proximally to the radial condyle of pelvic girdle and distally in serial fashion with the proximal radial, which in turn is articulated to the distal radial) and three or four most anterior radials arising directly from the puboischiadic bar. The posterior lobe, conversely, is supported by the long basipterygium, articulating with the basal condyle of the pelvic girdle, which sustains 16 basipterygial radials. Pelvic girdle condyles for the compound radial and the basipterygium are therefore distinctly separated, and the pelvic fins include about 20–21 total radials each. The presence of anterior radials arising directly from the puboischiadic bar clearly distinguish the morphology of the pelvic fins of
<taxonomicName id="F8BC4D4ABB719D5B23002BC888808BBD" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[877,1000,903,926]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B23002BC888808BBD" box="[877,1000,903,926]" italics="true" pageId="10" pageNumber="946">Ostarriraja</emphasis>
</taxonomicName>
from those of
<taxonomicName id="F8BC4D4ABB719D5B24FE2BC88F938BBD" authorityName="Bigelow &amp; Schroeder" authorityYear="1948" box="[1171,1275,903,926]" class="Elasmobranchii" family="Rajidae" genus="Cruriraja" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B24FE2BC88F938BBD" box="[1171,1275,903,926]" italics="true" pageId="10" pageNumber="946">Cruriraja</emphasis>
</taxonomicName>
,
<emphasis id="0DC8EADBBB719D5B25612BC88ED38BBD" box="[1292,1467,903,926]" italics="true" pageId="10" pageNumber="946">Schroederobatis</emphasis>
and
<emphasis id="0DC8EADBBB719D5B23ED2BE7889A8B9C" box="[896,1010,936,959]" italics="true" pageId="10" pageNumber="946">Springeria</emphasis>
, which are unique among skates in the absence of radials in the proximal section of the basipterygium and radials arising directly from the puboischiadic bar, therefore leaving a gap in the distribution of the pelvic-fin radials (
<bibRefCitation id="5B2D4B38BB719D5B24182C658EDB8C62" author="Bigelow, H. B. &amp; Schroeder, S. C." box="[1141,1459,1066,1089]" pageId="10" pageNumber="946" pagination="543 - 566" refId="ref13774" refString="Bigelow, H. B. &amp; Schroeder, S. C. 1948. New genera and species of batoid fishes. Journal of Marine Research, 7, 543 - 566." type="journal article" year="1948">Bigelow &amp; Schroeder 1948</bibRefCitation>
;
<bibRefCitation id="5B2D4B38BB719D5B23212C058FC98C42" author="McEachran, J. D. &amp; Miyake, T." box="[844,1185,1098,1121]" pageId="10" pageNumber="946" refId="ref17306" refString="McEachran, J. D. &amp; Miyake, T. 1990 a. Phylogenetic interrelationships of skates: a working hypothesis (Chondrichthyes: Rajoidei). Pp. 285 - 304 in H. L. Pratt Jr., S. H. Gruber &amp; T. Taniuchi (eds) Elasmobranchs as living resources: advances in the biology, ecology, systematics, and the status of the fisheries. NOAA Tech Report NMFS 90." type="journal volume" year="1990">McEachran &amp; Miyake 1990a</bibRefCitation>
, fig. 12;
<bibRefCitation id="5B2D4B38BB719D5B25762C0588A08CA1" author="McEachran, J. D. &amp; Dunn, K. A." pageId="10" pageNumber="946" pagination="271 - 290" refId="ref17223" refString="McEachran, J. D. &amp; Dunn, K. A. 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia, 1998, 271 - 290." type="journal article" year="1998">McEachran &amp; Dunn 1998</bibRefCitation>
). The puboischiadic bar is robust and wide, with a slightly convex anterior margin, although we do not exclude that taphonomy might have influenced, at least in part, the preservation of this structure, as well as the lowquality preservation of the right side of the pelvic fins. The presence of the puboischiadic foramina is difficult to detect. The prepelvic processes are moderately long, straight and pointed, extending anteriorly beyond the level of the posterior tip of metapterygia. However, the prepelvic processes are considerably shorter than one-half the width of the puboischiadic bar, distinguishing them from those of
<taxonomicName id="F8BC4D4ABB719D5B23212D9E88BD8DCB" authorityName="Günther" authorityYear="1870" box="[844,981,1489,1512]" class="Elasmobranchii" family="Arhynchobatidae" genus="Psammobatis" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B23212D9E88BD8DCB" box="[844,981,1489,1512]" italics="true" pageId="10" pageNumber="946">Psammobatis</emphasis>
</taxonomicName>
and
<taxonomicName id="F8BC4D4ABB719D5B24622D9E8FE68DCB" authorityName="Müller &amp; Henle" authorityYear="1837" box="[1039,1166,1489,1512]" class="Elasmobranchii" family="Arhynchobatidae" genus="Sympterygia" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B24622D9E8FE68DCB" box="[1039,1166,1489,1512]" italics="true" pageId="10" pageNumber="946">Sympterygia</emphasis>
</taxonomicName>
(longer than one-half width of the puboischiadic bar) or from
<emphasis id="0DC8EADBBB719D5B248D2DBE8EED8E2B" box="[1248,1413,1521,1544]" italics="true" pageId="10" pageNumber="946">Schroederobatis</emphasis>
and
<emphasis id="0DC8EADBBB719D5B23212E5D88D08E0A" box="[844,952,1554,1577]" italics="true" pageId="10" pageNumber="946">Springeria</emphasis>
(long with forked tips) (
<bibRefCitation id="5B2D4B38BB719D5B24A42E5D88E28E6A" author="McEachran, J. D. &amp; Miyake, T." pageId="10" pageNumber="946" refId="ref17306" refString="McEachran, J. D. &amp; Miyake, T. 1990 a. Phylogenetic interrelationships of skates: a working hypothesis (Chondrichthyes: Rajoidei). Pp. 285 - 304 in H. L. Pratt Jr., S. H. Gruber &amp; T. Taniuchi (eds) Elasmobranchs as living resources: advances in the biology, ecology, systematics, and the status of the fisheries. NOAA Tech Report NMFS 90." type="journal volume" year="1990">McEachran &amp; Miyake 1990a</bibRefCitation>
, figs 8 and 12;
<bibRefCitation id="5B2D4B38BB719D5B24552E7D8E238E6A" author="McEachran, J. D. &amp; Dunn, K. A." box="[1080,1355,1586,1609]" pageId="10" pageNumber="946" pagination="271 - 290" refId="ref17223" refString="McEachran, J. D. &amp; Dunn, K. A. 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia, 1998, 271 - 290." type="journal article" year="1998">McEachran &amp; Dunn 1998</bibRefCitation>
). Claspers are not present, corroborating the hypothesis that
<collectionCode id="59ADAE0CBB719D5B25082E1C8ED28E49" box="[1381,1466,1619,1642]" country="Austria" httpUri="http://grbio.org/cool/91g3-0mnw" name="Naturhistorisches Museum, Wien" pageId="10" pageNumber="946" type="Museum">NHMW</collectionCode>
2005z0283/0097 represents a young female.
</paragraph>
<paragraph id="3F0336C9BB719D5A23212EFB89418D44" blockId="10.[844,1467,1716,1901]" lastBlockId="11.[159,781,1263,1901]" lastPageId="11" lastPageNumber="947" pageId="10" pageNumber="946">
<emphasis id="0DC8EADBBB719D5B23212EFB88D68EE8" bold="true" box="[844,958,1716,1739]" pageId="10" pageNumber="946">Dentition.</emphasis>
The teeth of
<taxonomicName id="F8BC4D4ABB719D5B24E52EFB8E6B8EE8" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[1160,1283,1716,1739]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="10" pageNumber="946" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB719D5B24E52EFB8E6B8EE8" box="[1160,1283,1716,1739]" italics="true" pageId="10" pageNumber="946">Ostarriraja</emphasis>
</taxonomicName>
are small (
<emphasis id="0DC8EADBBB719D5B25C52EFB8EDC8EE8" box="[1448,1460,1716,1739]" italics="true" pageId="10" pageNumber="946">c</emphasis>
. 400–500 µm in crown width) and arranged in numerous rows (
<figureCitation id="A7872A4CBB719D5B23FE2EBA888F8F2F" box="[915,999,1781,1804]" captionStart="Figure 5" captionStartId="8.[159,226,876,897]" captionTargetBox="[368,1259,191,855]" captionTargetId="figure-473@8.[365,1262,188,858]" captionTargetPageId="8" captionText="Figure 5. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the tail with the anterior part on the left side; B, detail of the radials in the pectoral disc; C, close-up of the teeth; D, detail of some tail thorns. Abbreviations: mc, Meckel’s cartilage; pq, palatoquadrate; th, thorns; vc, vertebral centra. The arrows indicate the rostral direction. Scale bars: A–C = 1 mm; D = 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883468" httpUri="https://zenodo.org/record/10883468/files/figure.png" pageId="10" pageNumber="946">Fig. 5C</figureCitation>
). The dentition is of crushing
<typeStatus id="E007886BBB719D5B25502EBA8E038F2F" box="[1341,1387,1781,1804]" pageId="10" pageNumber="946">type</typeStatus>
with a gradient monognathic heterodonty. The teeth are uncusped and slightly decrease in size distally. Sexual and ontogenetic heterodonties are unknown because only a single specimen is available. The specimen shows only three or four tooth files on each jaw, resembling the condition of the early tooth development in skates (see
<bibRefCitation id="5B2D4B38BB709D5A21702D1F89718D44" author="Underwood, C. J. &amp; Johanson, Z. &amp; Welten, M. &amp; Metscher, B. &amp; Rasch, L. J. &amp; Fraser, G. J. &amp; Smith, M. M." box="[285,537,1360,1383]" pageId="11" pageNumber="947" pagination="0122553" refId="ref18850" refString="Underwood, C. J., Johanson, Z., Welten, M., Metscher, B., Rasch, L. J., Fraser, G. J. &amp; Smith, M. M. 2015. Development and evolution of dentition pattern and tooth order in the skates and rays (Batoidea; Chondrichthyes). PLoS ONE, 10 (4), e 0122553." type="journal article" year="2015">
Underwood
<emphasis id="0DC8EADBBB709D5A21CE2D1F8ABC8D44" box="[419,468,1360,1383]" italics="true" pageId="11" pageNumber="947">et al</emphasis>
. 2015
</bibRefCitation>
).
</paragraph>
<caption id="6BC36641BB709D5A20F22CCE8E2A8CE8" ID-DOI="http://doi.org/10.5281/zenodo.10883476" ID-Zenodo-Dep="10883476" httpUri="https://zenodo.org/record/10883476/files/figure.png" pageId="11" pageNumber="947" startId="11.[159,226,1153,1174]" targetBox="[240,1386,191,1129]" targetPageId="11" targetType="figure">
<paragraph id="3F0336C9BB709D5A20F22CCE8E2A8CE8" blockId="11.[159,1467,1153,1227]" pageId="11" pageNumber="947">
<emphasis id="0DC8EADBBB709D5A20F22CCE8A698CB5" bold="true" box="[159,257,1153,1174]" pageId="11" pageNumber="947">Figure 8.</emphasis>
The 50% majority rule consensus tree detected from the analysis of 74 morphological characters coded for 36 taxa showing the hypothetical relationships of
<taxonomicName id="F8BC4D4ABB709D5A22502CD389848C92" authority="Marram̀ &amp; Schult &amp; Kriwe, 2019" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[573,748,1180,1201]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="11" pageNumber="947" phylum="Chordata" rank="species" species="parva" status="gen. et sp. nov.">
<emphasis id="0DC8EADBBB709D5A22502CD389848C92" box="[573,748,1180,1201]" italics="true" pageId="11" pageNumber="947">Ostarriraja parva</emphasis>
</taxonomicName>
<taxonomicNameLabel id="16FB57A0BB709D5A22982CD388F88C92" box="[757,912,1180,1201]" pageId="11" pageNumber="947" rank="species">gen. et sp. nov.</taxonomicNameLabel>
within
<taxonomicName id="F8BC4D4ABB709D5A23B32CD38F238C92" box="[990,1099,1180,1201]" class="Elasmobranchii" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="11" pageNumber="947" phylum="Chordata" rank="order">Rajiformes</taxonomicName>
. The list of synapomorphies on each node (capital letters) is given in Supplemental material, Table S1. Numbers below the nodes indicate the Bremer support.
</paragraph>
</caption>
<paragraph id="3F0336C9BB709D5A20D42D3F8E018E09" blockId="11.[159,781,1263,1901]" lastBlockId="11.[844,1467,1263,1578]" pageId="11" pageNumber="947">
The crown is massive, semi-oval in occlusal view, and longer mesio-distally than labio-lingually, with an arched labial edge and a lingual one with a small medial protuberance (
<figureCitation id="A7872A4CBB709D5A20982D9E8A5E8DCB" box="[245,310,1489,1512]" captionStart="Figure 7" captionStartId="9.[159,226,1387,1408]" captionTargetBox="[368,1259,803,1363]" captionTargetId="figure-292@9.[365,1262,800,1366]" captionTargetPageId="9" captionText="Figure 7. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria. Three isolated teeth from the holotype NHMW 2005z0283/0097 in A, occlusal; B, lingual; C, labial; and D, lateral view. Scale bar: 200µm." figureDoi="http://doi.org/10.5281/zenodo.10883474" httpUri="https://zenodo.org/record/10883474/files/figure.png" pageId="11" pageNumber="947">Fig. 7</figureCitation>
). The teeth show a well-marked transverse cutting crest that separates the labial and lingual crown surfaces. The mesial and distal cutting edges are concavely arched and reach the margins of the crown. A labial cutting edge is absent. There is no strong cusp but the crown bears a poorly developed, semi-centrally situated and erected cone. The apron, uvula and crown ornamentation are absent. The lingual surface is weakly convex. The root is obliquely directed lingually. The root is massive, as wide as the crown but not protruding below the crown in occlusal view, relatively high and more or less oval in cross section. The root is holaulacorhize and bilobate, with unequally developed massive root lobes that widen basally to form a large base with slightly undulated margins. However, we do not exlude that the presence of unequally developed root lobes could be due to the juvenile stage of the specimen or the position of the teeth within the jaws. A pair of margino-lingual foramina is present. Their presence might indicate the presence of fusion of root lobes, although we do not exclude, again, that fusion might be related to the juvenile stage. The collar (= root coating of
<bibRefCitation id="5B2D4B38BB709D5A24E22DBD8E098E2A" author="Herman, J. &amp; Hovestadt-Euler, M. &amp; Hovestadt, D. C. &amp; Stehmann, M." box="[1167,1377,1522,1545]" pageId="11" pageNumber="947" pagination="179 - 236" refId="ref15714" refString="Herman, J., Hovestadt-Euler, M., Hovestadt, D. C. &amp; Stehmann, M. 1996. Contributions to the study of the comparative morphology of teeth and other relevant ichthyodorulites in living supra-specific taxa of Chondrichthyan fishes. Part B: Batomorphii No. 1 c: Order Rajiformes - Sub order Rajoidei - Family: Rajidae - Genera and Subgenera: Arhynchobatis, Bathyraja richardsoni - type, Cruriraja, Irolita, Notoraja, Pavoraja (Insentiraja), Pavoraja (Pavoraja), Pseudoraja, Raja (Atlantoraja), Raja (Okamejei) and Rhinoraja. Bulletin de l' Institut Royal des Sciences Naturelles de Belgique, Biologie, 66, 179 - 236." type="journal article" year="1996">
Herman
<emphasis id="0DC8EADBBB709D5A24812DBD8E4C8E2A" box="[1260,1316,1522,1545]" italics="true" pageId="11" pageNumber="947">et al.</emphasis>
1996
</bibRefCitation>
) is very distinct and covers the upper part of the root stem.
</paragraph>
<paragraph id="3F0336C9BB709D5D23212E1C8E158E87" blockId="11.[844,1467,1619,1901]" lastBlockId="12.[844,1467,1444,1700]" lastPageId="12" lastPageNumber="948" pageId="11" pageNumber="947">
<emphasis id="0DC8EADBBB709D5A23212E1C88B58E49" bold="true" box="[844,989,1619,1642]" pageId="11" pageNumber="947">Squamation.</emphasis>
The surface of the disc of
<taxonomicName id="F8BC4D4ABB709D5A25522E1C8ED28E49" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[1343,1466,1619,1642]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="11" pageNumber="947" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB709D5A25522E1C8ED28E49" box="[1343,1466,1619,1642]" italics="true" pageId="11" pageNumber="947">Ostarriraja</emphasis>
</taxonomicName>
appears to be largely free of dermal denticles. Thorns on the dorsal surface of the nuchal and scapular region of the disc, as well as thorns along the dorsal midline of the disc, appear absent, although this might be due to the ventral exposure of the specimen, which prevents identification of the dorsal surface of the disc. Malar and alar thorns also appear to be absent. However, it must be emphasized that malar and alar thorns are only present in mature male skates (
<bibRefCitation id="5B2D4B38BB779D5D22302DEB8A1D8DF8" author="McEachran, J. D. &amp; Konstantinou, H." pageId="12" pageNumber="948" pagination="165 - 178" refId="ref17263" refString="McEachran, J. D. &amp; Konstantinou, H. 1996. Survey of the variation in alar and malar thorns in skates: phylogenetic implications (Chondrichthyes: Rajoidei). Journal of Morphology, 228, 165 - 178." type="journal article" year="1996">McEachran &amp; Konstantinou 1996</bibRefCitation>
;
<bibRefCitation id="5B2D4B38BB779D5D21E22D8B89AC8DF8" author="McEachran, J. D. &amp; Dunn, K. A." box="[399,708,1476,1499]" pageId="12" pageNumber="948" pagination="271 - 290" refId="ref17223" refString="McEachran, J. D. &amp; Dunn, K. A. 1998. Phylogenetic analysis of skates, a morphologically conservative clade of elasmobranchs (Chondrichthyes: Rajidae). Copeia, 1998, 271 - 290." type="journal article" year="1998">McEachran &amp; Dunn 1998</bibRefCitation>
), and their presence in
<taxonomicName id="F8BC4D4ABB779D5D210D2DAB8AB38DD8" authorityName="Marram̀ &amp; Schult &amp; Kriwe" authorityYear="2019" box="[352,475,1508,1531]" class="Elasmobranchii" genus="Ostarriraja" higherTaxonomySource="GBIF" kingdom="Animalia" order="Rajiformes" pageId="12" pageNumber="948" phylum="Chordata" rank="genus">
<emphasis id="0DC8EADBBB779D5D210D2DAB8AB38DD8" box="[352,475,1508,1531]" italics="true" pageId="12" pageNumber="948">Ostarriraja</emphasis>
</taxonomicName>
is very unlikely due to the sex (female) and late juvenile stage of the fossil specimen (development of denticles proceeds caudo-rostrally in skates;
<bibRefCitation id="5B2D4B38BB779D5D217F2E0B8A8F8E78" author="Miyake, T. &amp; Vaglia, J. L. &amp; Taylor, L. H. &amp; Hall, B. K." box="[274,487,1604,1627]" pageId="12" pageNumber="948" pagination="61 - 81" refId="ref17531" refString="Miyake, T., Vaglia, J. L., Taylor, L. H. &amp; Hall, B. K. 1999. Development of dermal denticles in skates (chondrichthyes, batoidea): patterning and cellular differentiation. Journal of Morphology, 241, 61 - 81." type="journal article" year="1999">
Miyake
<emphasis id="0DC8EADBBB779D5D21032E0B8AC08E78" box="[366,424,1604,1627]" italics="true" pageId="12" pageNumber="948">et al.</emphasis>
1999
</bibRefCitation>
). However, multiple rows of thorns are present along the entire dorsal margin of the tail (
<figureCitation id="A7872A4CBB779D5D20902ECB8A398EB8" box="[253,337,1668,1691]" captionStart="Figure 5" captionStartId="8.[159,226,876,897]" captionTargetBox="[368,1259,191,855]" captionTargetId="figure-473@8.[365,1262,188,858]" captionTargetPageId="8" captionText="Figure 5. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the tail with the anterior part on the left side; B, detail of the radials in the pectoral disc; C, close-up of the teeth; D, detail of some tail thorns. Abbreviations: mc, Meckel’s cartilage; pq, palatoquadrate; th, thorns; vc, vertebral centra. The arrows indicate the rostral direction. Scale bars: A–C = 1 mm; D = 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883468" httpUri="https://zenodo.org/record/10883468/files/figure.png" pageId="12" pageNumber="948">Fig. 5A</figureCitation>
). Thorns on the tail occur in three originally equally spaced parallel rows (one mediocaudal and two laterocaudal) formed by at least 35 similarsized and similar-shaped pungent thorns each. In dorsal view (
<figureCitation id="A7872A4CBB779D5D208B2F4B8A548F38" box="[230,316,1796,1819]" captionStart="Figure 5" captionStartId="8.[159,226,876,897]" captionTargetBox="[368,1259,191,855]" captionTargetId="figure-473@8.[365,1262,188,858]" captionTargetPageId="8" captionText="Figure 5. Ostarriraja parva gen. et sp. nov. from the early Miocene of Upper Austria, holotype, NHMW 2005z0283/0097. A, closeup of the tail with the anterior part on the left side; B, detail of the radials in the pectoral disc; C, close-up of the teeth; D, detail of some tail thorns. Abbreviations: mc, Meckel’s cartilage; pq, palatoquadrate; th, thorns; vc, vertebral centra. The arrows indicate the rostral direction. Scale bars: A–C = 1 mm; D = 0.5 mm." figureDoi="http://doi.org/10.5281/zenodo.10883468" httpUri="https://zenodo.org/record/10883468/files/figure.png" pageId="12" pageNumber="948">Fig. 5D</figureCitation>
) thorns are bilateral symmetric with four strongly developed elongated ridges forming right angles to each other, typical of the cross-type morphology of dermal denticles of some skates (
<bibRefCitation id="5B2D4B38BB779D5D23392D8A8F3D8DFF" author="Gravendeel, R. &amp; Van Neer, W. &amp; Brinkhuizen, D." box="[852,1109,1477,1500]" pageId="12" pageNumber="948" pagination="420 - 441" refId="ref15240" refString="Gravendeel, R., Van Neer, W. &amp; Brinkhuizen, D. 2002. An identification key for dermal denticles of Rajidae from the North Sea. International Journal of Osteoarchaeology, 12, 420 - 441." type="journal article" year="2002">
Gravendeel
<emphasis id="0DC8EADBBB779D5D23B62D8A8F668DFF" box="[987,1038,1477,1500]" italics="true" pageId="12" pageNumber="948">et al</emphasis>
. 2002
</bibRefCitation>
). The anterior elongate ridge is larger than the posterior one. The crown of the thorn is hook-like and obliquely implanted on the basal plate. The cusp of the crown clearly overshoots the basal plate posteriorly and the crown is almost as long as the basal plate, resembling the condition of thorns in
<taxonomicName id="F8BC4D4ABB779D5D25502E2388058E87" baseAuthorityName="Fries" baseAuthorityYear="1838" class="Elasmobranchii" family="Rajidae" genus="Rajella" kingdom="Animalia" order="Rajiformes" pageId="12" pageNumber="948" phylum="Chordata" rank="species" species="lintea">
<emphasis id="0DC8EADBBB779D5D25502E2388058E87" italics="true" pageId="12" pageNumber="948">Rajella lintea</emphasis>
</taxonomicName>
(=
<taxonomicName id="F8BC4D4ABB779D5D23F12EC28F238E87" baseAuthorityName="Fries" baseAuthorityYear="1838" box="[924,1099,1677,1700]" class="Elasmobranchii" family="Rajidae" genus="Dipturus" kingdom="Animalia" order="Rajiformes" pageId="12" pageNumber="948" phylum="Chordata" rank="species" species="linteus">
<emphasis id="0DC8EADBBB779D5D23F12EC28F238E87" box="[924,1099,1677,1700]" italics="true" pageId="12" pageNumber="948">Dipturus linteus</emphasis>
</taxonomicName>
of
<bibRefCitation id="5B2D4B38BB779D5D241E2EC28E048E87" author="Gravendeel, R. &amp; Van Neer, W. &amp; Brinkhuizen, D." box="[1139,1388,1677,1700]" pageId="12" pageNumber="948" pagination="420 - 441" refId="ref15240" refString="Gravendeel, R., Van Neer, W. &amp; Brinkhuizen, D. 2002. An identification key for dermal denticles of Rajidae from the North Sea. International Journal of Osteoarchaeology, 12, 420 - 441." type="journal article" year="2002">
Gravendeel
<emphasis id="0DC8EADBBB779D5D249A2EC28E408E87" box="[1271,1320,1677,1700]" italics="true" pageId="12" pageNumber="948">et al</emphasis>
. 2002
</bibRefCitation>
).
</paragraph>
</subSubSection>
</treatment>
</document>
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