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| 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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| Title: | A complete late Cretaceous iguanian (Squamata, Reptilia) from the Gobi and identification of a new iguanian clade ; American Museum novitates, no. 3584 |
| Other Titles: | Complete Gobi iguanian |
| Authors: | Conrad, Jack L. Norell, Mark. Mongolian-American Museum Paleontological Project. Mongolyn Shinzhlėkh Ukhaany Akademi. |
| Issue Date: | 2007 |
| Publisher: | New York, NY : American Museum of Natural History |
| Series/Report no.: | American Museum novitates, no. 3584 |
| Abstract: | "Iguania 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)"--P. [1]. |
| Description: | 47 p. : ill. (1 col.), map ; 26 cm. Includes bibliographical references (p. 31-35). |
| URI: | http://hdl.handle.net/2246/5877 |
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