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179 lines
16 KiB
XML
<document ID-DOI="10.5281/zenodo.3382576" ID-GBIF-Dataset="48817a66-49e4-4e6f-b6c6-879db64b9ec9" ID-Zenodo-Dep="3382576" approvalRequired="52" approvalRequired_for_bibRefs="8" approvalRequired_for_illustrations="24" approvalRequired_for_taxonomicNames="20" checkinTime="1567247981485" checkinUser="plazi" docAuthor="Rauhut, Oliver W. M." docDate="2003" docId="77323C29FFD2B427FF1F99F6FB2BFD43" docLanguage="en" docName="Rauhut2003BasalTheropod_ocr.pdf" docOrigin="Special papers in palaeontology 69" docStyle="DocumentStyle{}" docTitle="Szechuanosaurus zigongensis Gao 1993" docType="treatment" docVersion="14" lastPageNumber="22" masterDocId="8B0B4451FFC7B431FFF59E70FFF0FFFF" masterDocTitle="The interrelationships and evolution of basal theropod dinosaurs" masterLastPageNumber="213" masterPageNumber="1" pageNumber="21" updateTime="1643591701704" updateUser="ExternalLinkService">
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<mods:mods xmlns:mods="http://www.loc.gov/mods/v3">
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<mods:titleInfo>
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<mods:title>The interrelationships and evolution of basal theropod dinosaurs</mods:title>
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</mods:titleInfo>
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<mods:name type="personal">
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<mods:role>
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<mods:roleTerm>Author</mods:roleTerm>
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</mods:role>
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<mods:namePart>Rauhut, Oliver W. M.</mods:namePart>
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</mods:name>
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<mods:typeOfResource>text</mods:typeOfResource>
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<mods:relatedItem type="host">
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<mods:titleInfo>
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<mods:title>Special papers in palaeontology</mods:title>
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</mods:titleInfo>
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<mods:part>
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<mods:date>2003</mods:date>
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<mods:detail type="pubDate">
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<mods:number>2003-05-31</mods:number>
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</mods:detail>
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<mods:detail type="volume">
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<mods:number>69</mods:number>
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</mods:detail>
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<mods:extent unit="page">
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<mods:start>1</mods:start>
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<mods:end>213</mods:end>
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</mods:extent>
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</mods:part>
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</mods:relatedItem>
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<mods:classification>journal article</mods:classification>
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<mods:identifier type="DOI">10.5281/zenodo.3382576</mods:identifier>
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<mods:identifier type="GBIF-Dataset">48817a66-49e4-4e6f-b6c6-879db64b9ec9</mods:identifier>
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<mods:identifier type="Zenodo-Dep">3382576</mods:identifier>
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</mods:mods>
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<treatment ID-DOI="http://doi.org/10.5281/zenodo.5123171" ID-GBIF-Taxon="159404380" ID-Zenodo-Dep="5123171" LSID="urn:lsid:plazi:treatment:77323C29FFD2B427FF1F99F6FB2BFD43" httpUri="http://treatment.plazi.org/id/77323C29FFD2B427FF1F99F6FB2BFD43" lastPageId="22" lastPageNumber="22" pageId="21" pageNumber="21">
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<subSubSection box="[234,1141,1926,1962]" pageId="21" pageNumber="21" type="nomenclature">
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<paragraph blockId="21.[224,1141,1926,2018]" box="[234,1141,1926,1962]" pageId="21" pageNumber="21">
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<taxonomicName authorityName="Gao" authorityYear="1993" box="[234,947,1926,1962]" class="Reptilia" genus="Szechuanosaurus" higherTaxonomySource="CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="species" species="zigongensis">
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<emphasis box="[234,754,1926,1962]" italics="true" pageId="21" pageNumber="21">‘Szechuanosaurus' zigongensis</emphasis>
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<bibRefCitation author="Gao" box="[768,947,1926,1962]" firstAuthor="Gao" journalOrPublisher="Vertebrata PalAsiatica" pageId="21" pageNumber="21" pagination="308 - 314" part="31" refId="ref133334" refString="------ 1993. A new species of Szechuanosaurus from the Middle Jurassic of Dashanpu, Zigong, Sichuan. Vertebrata PalAsiatica, 31, 308 - 314. [In Chinese]." title="A new species of Szechuanosaurus from the Middle Jurassic of Dashanpu, Zigong, Sichuan" type="journal article" year="1993">Gao, 1993</bibRefCitation>
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</taxonomicName>
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; metataxon
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</paragraph>
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</subSubSection>
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<subSubSection pageId="21" pageNumber="21" type="distribution">
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<paragraph blockId="21.[224,1141,1926,2018]" box="[225,639,1984,2018]" pageId="21" pageNumber="21">
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<emphasis box="[225,293,1984,2018]" italics="true" pageId="21" pageNumber="21">
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<taxonomicName authorityName="Diakonoff" authorityYear="1982" box="[225,289,1984,2018]" class="Insecta" family="Tortricidae" genus="Age" kingdom="Animalia" order="Lepidoptera" pageId="21" pageNumber="21" phylum="Arthropoda" rank="genus">Age</taxonomicName>
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.
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</emphasis>
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Bathonian-Callovian.
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</paragraph>
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<paragraph blockId="21.[228,1052,2081,2116]" box="[228,1052,2082,2116]" pageId="21" pageNumber="21">
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<emphasis box="[228,412,2082,2116]" italics="true" pageId="21" pageNumber="21">Occurrence.</emphasis>
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Xiashaxiamo Formation, Sichuan, China.
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</paragraph>
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</subSubSection>
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<subSubSection pageId="21" pageNumber="21" type="diagnosis">
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<paragraph blockId="21.[226,1995,2177,2580]" pageId="21" pageNumber="21">
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<emphasis box="[226,405,2178,2214]" italics="true" pageId="21" pageNumber="21">Diagnosis.</emphasis>
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Differs from
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<taxonomicName authorityName="Dong & Tang" authorityYear="1985" box="[642,839,2178,2214]" class="Reptilia" family="Megalosauridae" genus="Gasosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[642,839,2178,2214]" italics="true" pageId="21" pageNumber="21">Gasosaurus</emphasis>
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</taxonomicName>
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and
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<taxonomicName authorityName="Dong Zhiming" authorityYear="1984" box="[920,1203,2178,2214]" class="Reptilia" family="Metriacanthosauridae" genus="Xuanhanosaurus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[920,1203,2178,2214]" italics="true" pageId="21" pageNumber="21">Xuanhanosaurus</emphasis>
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</taxonomicName>
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in the more rectangular deltopectoral crest and the proximal part of the humerus being less expanded transversely; from
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<taxonomicName baseAuthorityName="Zhao and Currie" baseAuthorityYear="1993" box="[1607,1910,2223,2259]" class="Reptilia" genus="Monolophosaurus" higherTaxonomySource="CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[1607,1910,2223,2259]" italics="true" pageId="21" pageNumber="21">Monolophosaurus</emphasis>
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</taxonomicName>
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and
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<taxonomicName authorityName="Walker" authorityYear="1964" box="[226,557,2269,2305]" class="Reptilia" family="Megalosauridae" genus="Eustreptospondylus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[226,557,2269,2305]" italics="true" pageId="21" pageNumber="21">Eustreptospondylus</emphasis>
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</taxonomicName>
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in the gradually sloping anterior rim of the maxilla and the lack of opisthocoelous cervical vertebrae; from
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<taxonomicName baseAuthorityName="Bonaparte" baseAuthorityYear="1986" box="[644,923,2314,2350]" class="Reptilia" family="Piatnitzkysauridae" genus="Piatnitzkysaurus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[644,923,2314,2350]" italics="true" pageId="21" pageNumber="21">Piatnitzkysaurus</emphasis>
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</taxonomicName>
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in the gradually sloping anterior rim of the maxilla and the less expanded proximal humerus; from
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<taxonomicName authorityName="von Huene" authorityYear="1932" box="[872,1044,2360,2396]" class="Reptilia" family="Megalosauridae" genus="Iliosuchus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[872,1044,2360,2396]" italics="true" pageId="21" pageNumber="21">Iliosuchus</emphasis>
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</taxonomicName>
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in the lack of a vertical ridge on the ilium; from
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<taxonomicName baseAuthorityName="Eudes-Deslongchamps" baseAuthorityYear="1838" box="[226,486,2406,2442]" class="Reptilia" family="Megalosauridae" genus="Poekilopleuron" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[226,486,2406,2442]" italics="true" pageId="21" pageNumber="21">Poekilopleuron</emphasis>
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</taxonomicName>
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in the more strongly pronounced olecranon process of the ulna and the lack of a medial process on the radius; from
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<taxonomicName box="[694,1034,2451,2487]" class="Reptilia" family="Metriacanthosauridae" genus="Metriacanthosaurus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[694,1034,2451,2487]" italics="true" pageId="21" pageNumber="21">Metriacanthosaurus</emphasis>
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</taxonomicName>
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in the less steeply sloping posterodorsal rim of the ilium; from
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<taxonomicName authorityName="Huene" authorityYear="1926" box="[317,600,2497,2533]" class="Reptilia" genus="Proceratosaurus" higherTaxonomySource="CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[317,600,2497,2533]" italics="true" pageId="21" pageNumber="21">Proceratosaurus</emphasis>
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</taxonomicName>
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in the more massive and relatively shorter posterior part of the maxilla. There are no elements preserved that overlap with
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<taxonomicName box="[866,1105,2542,2578]" class="Reptilia" family="Megalosauridae" genus="Megalosaurus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">
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<emphasis box="[866,1105,2542,2578]" italics="true" pageId="21" pageNumber="21">Megalosaurus</emphasis>
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</taxonomicName>
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or
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<emphasis box="[1165,1430,2542,2578]" italics="true" pageId="21" pageNumber="21">
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<taxonomicName box="[1165,1424,2542,2578]" class="Reptilia" family="Megalosauridae" genus="Piveteausaurus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="21" pageNumber="21" phylum="Chordata" rank="genus">Piveteausaurus</taxonomicName>
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.
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</emphasis>
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</paragraph>
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</subSubSection>
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<subSubSection pageId="22" pageNumber="22" type="discussion">
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<paragraph blockId="22.[280,2055,206,701]" pageId="22" pageNumber="22">
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<emphasis box="[280,984,207,243]" italics="true" pageId="22" pageNumber="22">
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Remarks. ‘
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<taxonomicName authorityName="Gao" authorityYear="1993" box="[469,984,207,243]" class="Reptilia" genus="Szechuanosaurus" higherTaxonomySource="CoL" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="species" species="zigongensis">Szechuanosaurus" zigongensis</taxonomicName>
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</emphasis>
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is one of five theropod taxa described from the Xiashaxiamo Formation of China. However, two of these taxa,
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<taxonomicName authorityName="He" authorityYear="1984" box="[1145,1687,252,288]" class="Reptilia" family="Coeluridae" genus="Chuandongocoelurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="species" species="primitivus">
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<emphasis box="[1145,1687,252,288]" italics="true" pageId="22" pageNumber="22">Chuandongocoelurus primitivus</emphasis>
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</taxonomicName>
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and
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<emphasis italics="true" pageId="22" pageNumber="22">
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<taxonomicName authorityName="He" authorityYear="1984" class="Reptilia" family="Megalosauridae" genus="Kaijiangosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="species" species="lini">Kaijiangosaurus lini</taxonomicName>
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,
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</emphasis>
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are here regarded as
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<emphasis box="[763,1014,298,334]" italics="true" pageId="22" pageNumber="22">nomina dubia,</emphasis>
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and there seem to be sufficient differences between
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<taxonomicName authorityName="Gao" authorityYear="1993" class="Reptilia" genus="Szechuanosaurus" higherTaxonomySource="CoL" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="species" species="zigongensis">
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‘5.’
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<emphasis box="[281,477,344,380]" italics="true" pageId="22" pageNumber="22">zigongensis</emphasis>
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</taxonomicName>
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and
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<taxonomicName authorityName="Dong & Tang" authorityYear="1985" box="[576,774,344,380]" class="Reptilia" family="Megalosauridae" genus="Gasosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="genus">
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<emphasis box="[576,774,344,380]" italics="true" pageId="22" pageNumber="22">Gasosaurus</emphasis>
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</taxonomicName>
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and
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<taxonomicName authorityName="Dong Zhiming" authorityYear="1984" box="[869,1152,344,380]" class="Reptilia" family="Metriacanthosauridae" genus="Xuanhanosaurus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="genus">
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<emphasis box="[869,1152,344,380]" italics="true" pageId="22" pageNumber="22">Xuanhanosaurus</emphasis>
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</taxonomicName>
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to regard the former species as a tentatively valid metataxon. It should be noted, however, that the discovery of more material might prove
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<taxonomicName authorityName="Gao" authorityYear="1993" box="[1794,2054,389,425]" class="Reptilia" genus="Szechuanosaurus" higherTaxonomySource="CoL" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="species" species="zigongensis">
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<emphasis box="[1794,2054,389,425]" italics="true" pageId="22" pageNumber="22">‘S.9 zigongensis</emphasis>
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</taxonomicName>
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to be a junior synonym of
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<emphasis box="[768,1270,435,471]" italics="true" pageId="22" pageNumber="22">
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<taxonomicName authorityName="Dong" authorityYear="1984" box="[768,1264,435,471]" class="Reptilia" family="Metriacanthosauridae" genus="Xuanhanosaurus" higherTaxonomySource="GBIF,CoL" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="species" species="qilixiaensis">Xuanhanosaurus qilixiaensis</taxonomicName>
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,
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</emphasis>
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since these two taxa are very similar in all comparable elements with the exception of the humerus.
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</paragraph>
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<paragraph blockId="22.[280,2055,206,701]" pageId="22" pageNumber="22">
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It is rather unclear why ‘
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<taxonomicName authorityName="Gao" authorityYear="1993" box="[750,1261,527,563]" class="Reptilia" genus="Szechuanosaurus" higherTaxonomySource="CoL" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="species" species="zigongensis">
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<emphasis box="[750,1261,527,563]" italics="true" pageId="22" pageNumber="22">Szechuanosaurus" zigongensis</emphasis>
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</taxonomicName>
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has been referred to the considerably younger genus
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<emphasis box="[391,691,572,608]" italics="true" pageId="22" pageNumber="22">
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<taxonomicName authorityName="Young" authorityYear="1942" box="[391,685,572,608]" class="Reptilia" family="Allosauridae" genus="Szechuanosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="genus">Szechuanosaurus</taxonomicName>
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.
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</emphasis>
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The type material of this genus is not diagnostic, and the material referred to the type species by
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<bibRefCitation author="Dong" box="[545,848,618,654]" etAl="et al." firstAuthor="Dong" journalOrPublisher="Palaeontologia Sinica" pageId="22" pageNumber="22" pagination="1 - 145" part="162" refId="ref132502" refString="------ ZHOU, s. and zhang, y. 1983. The dinosaurian remains from Sichuan Basin, China. Palaeontologia Sinica, 162, 1 - 145. [In Chinese]." title="The dinosaurian remains from Sichuan Basin, China" type="journal article" year="1983">
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Dong
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<emphasis box="[648,725,618,654]" italics="true" pageId="22" pageNumber="22">et al.</emphasis>
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(1983)
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</bibRefCitation>
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differs significantly from the type skeleton of
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<taxonomicName authorityName="Gao" authorityYear="1993" box="[1621,1883,618,654]" class="Reptilia" genus="Szechuanosaurus" higherTaxonomySource="CoL" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="species" species="zigongensis">
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‘5.’
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<emphasis box="[1686,1888,618,654]" italics="true" pageId="22" pageNumber="22">zigongensis.</emphasis>
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</taxonomicName>
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Thus, the latter species should be removed from
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<emphasis box="[947,1243,664,700]" italics="true" pageId="22" pageNumber="22">
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<taxonomicName authorityName="Young" authorityYear="1942" box="[947,1239,664,700]" class="Reptilia" family="Allosauridae" genus="Szechuanosaurus" higherTaxonomySource="GBIF" kingdom="Animalia" order="Dinosauria" pageId="22" pageNumber="22" phylum="Chordata" rank="genus">Szechuanosaurus</taxonomicName>
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.
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</emphasis>
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</paragraph>
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</subSubSection>
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</treatment>
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</document> |