A complete late Cretaceous iguanian (Squamata, Reptilia) from the Gobi and identification of a new iguanian clade ; American Museum novitates, no. 3584

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dc.contributor.authorConrad, Jack L.en_US
dc.contributor.authorNorell, Mark.en_US
dc.contributor.authorMongolian-American Museum Paleontological Project.en_US
dc.contributor.authorMongolyn ShinzhlÄ—kh Ukhaany Akademi.en_US
dc.date.accessioned2007-09-18T14:04:09Z
dc.date.available2007-09-18T14:04:09Z
dc.date.issued2007en_US
dc.description47 p. : ill. (1 col.), map ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 31-35).en_US
dc.description.abstractIguania is a diverse clade with an incompletely known fossil record. Here, we describe and name the earliest iguanian known from a complete skeleton. The specimen (IGM 3/858) comes from Ukhaa Tolgod (Upper Cretaceous of Mongolia) and offers important insights into the evolutionary history of iguanian osteology. The new taxon is diagnosed by a combination of character states, including the presence of a frontoparietal fontanelle, absence of an enlarged nuchal fossa, and unflared tooth crowns. We performed a cladistic analysis including 54 taxa scored for 202 informative morphological characters. A strict consensus of 46 shortest recovered trees reveals that the new taxon is a basal member of a previously unidentified clade of Cretaceous iguanians, probably endemic to the Gobi. This clade of Gobi iguanians is nested within a monophyletic Pleurodonta (non-acrodontan iguanians).en_US
dc.format.extent7406758 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5877
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, NY : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates, no. 3584en_US
dc.subject.lccQL1 .A436 no.3584, 2007en_US
dc.subject.lcshSaichangurvel davidsoni.en_US
dc.subject.lcshGobiguania.en_US
dc.subject.lcshIguanas, Fossil -- Mongolia -- Ukhaa Tolgod.en_US
dc.subject.lcshLizards, Fossil -- Mongolia -- Ukhaa Tolgod.en_US
dc.subject.lcshReptiles, Fossil -- Mongolia -- Ukhaa Tolgod.en_US
dc.subject.lcshPaleontology -- Cretaceous -- Mongolia -- Ukhaa Tolgod.en_US
dc.subject.lcshPaleontology -- Mongolia -- Ukhaa Tolgod.en_US
dc.subject.lcshIguanas -- Phylogeny.en_US
dc.subject.lcshLizards -- Phylogeny.en_US
dc.titleA complete late Cretaceous iguanian (Squamata, Reptilia) from the Gobi and identification of a new iguanian clade ; American Museum novitates, no. 3584en_US
dc.title.alternativeComplete Gobi iguanianen_US
dc.typetexten_US

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