Osteology of Gobiderma pulchrum (Monstersauria, Lepidosauria, Reptilia). (Bulletin of the American Museum of Natural History, no. 362)

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dc.contributor.author Conrad, Jack L.
dc.contributor.author Rieppel, Olivier.
dc.contributor.author Gauthier, Jacques, 1948-
dc.contributor.author Norell, Mark.
dc.contributor.author Mongolian-American Museum Paleontological Project.
dc.date.accessioned 2012-01-04T13:42:21Z
dc.date.available 2012-01-04T13:42:21Z
dc.date.issued 2011-12-30
dc.identifier.uri http://hdl.handle.net/2246/6149
dc.description 88 p. : ill., map ; 26 cm. en_US
dc.description.abstract Joint expeditions by the American Museum of Natural History and Mongolian Academy of Sciences have recovered significant new remains of the basal monstersaur Gobiderma pulchrum. We describe these new specimens in detail and also revisit the originally described material in order to more fully understand this pivotal anguimorph taxon. The newly discovered specimens include skull and postcranial materials that add dramatically to the understanding of the osteology of Gobiderma pulchrum. We revise the diagnosis of this species, adding to the previously published diagnosis the following character states: premaxillary nasal process is narrowest mediolaterally; postfrontal and postorbital remain unfused; postorbital extends posteriorly for almost the entire length of the supratemporal fenestra; the Vidian canal is posteriorly enclosed by the parabasisphenoid; an anterior coracoid emargination is present; the pelvis is completely fused; and the lateral plantar tubercle is distally placed. A phylogenetic analysis confirms the placement of Gobiderma pulchrum as a non-helodermatid monstersaur. As such, the fact that it is known from reasonably complete remains makes it pivotal for understanding character evolution within Monstersauria. The Djadokhta Formation includes several carnivorous/insectivorous lizards and theropod dinosaurs--more than is usual for extant communities, but perhaps analogous in some ways to parts of modern Australia. en_US
dc.language.iso en_US en_US
dc.publisher American Museum of Natural History. en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History, no. 362. en_US
dc.subject Gobiderma pulchrum. en_US
dc.subject Monstersauria. en_US
dc.subject Reptiles, Fossil. en_US
dc.subject Mongolia. en_US
dc.subject Inner Mongolia (China) en_US
dc.subject Paleontology. en_US
dc.title Osteology of Gobiderma pulchrum (Monstersauria, Lepidosauria, Reptilia). (Bulletin of the American Museum of Natural History, no. 362) en_US

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  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

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