Gobiconodonts from the early Cretaceous of Oshih (Ashile), Mongolia. American Museum novitates ; no. 3348

Simple item page
dc.contributor.authorRougier, Guillermo W.en_US
dc.contributor.authorNovacek, Michael J.en_US
dc.contributor.authorMcKenna, Malcolm C.en_US
dc.contributor.authorWible, John R.en_US
dc.contributor.authorMongolian-American Museum Paleontological Project.en_US
dc.contributor.authorMongolyn ShinzhlÄ—kh Ukhaany Akademi.en_US
dc.date.accessioned2005-10-06T16:42:16Z
dc.date.available2005-10-06T16:42:16Z
dc.date.issued2001en_US
dc.description32 p. : ill. ; 26 cm.en_US
dc.descriptionIncludes bibliographical references (p. 22-27).en_US
dc.description.abstractWe describe here the first discovered mammalian remains from the Mongolian early Cretaceous locality Oshih (Ashile). Four fragmentary, tooth-bearing specimens, probably corresponding to three individuals, have been recovered. All the fossils can be assigned to the family Gobiconodontidae (Chow and Rich, 1984). The specimens include three lower jaw fragments and one upper jaw fragment, and represent at least two different taxa. Gobiconodon hopsoni, n. sp., is described and diagnosed here. This new species is larger than G. ostromi (early Cretaceous Cloverly Formation, USA); thus, it is the largest triconodont and one of the largest Mesozoic mammals known. Gobiconodon sp., found also at Oshih, is slightly larger than G. borissiaki, from the early Cretaceous of Khoobur, Mongolia, but smaller than G. ostromi. The specimens of this second species are poorly preserved and provide insufficient data for a diagnosis. The status of the different species of Gobiconodon and the new gobiconodontid Hangjinia is reviewed. In gobiconodontids and Triconodontidae, the maxillae appear to make a significant contribution to the orbital rim, a condition unusual among basal mammals, in which the lacrimal and jugal are the main components. Other triconodonts such as Jeholodens, likely an "amphilestid", appear to show the primitive mammalian condition for this feature. We present a brief consideration of triconodont relationships and discuss alternative placements of Gobiconodon among Mammaliaformes.en_US
dc.format.extent508475 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/2901
dc.languageengen_US
dc.language.isoen_US
dc.publisherNew York, NY : American Museum of Natural Historyen_US
dc.relation.ispartofseriesAmerican Museum novitates ; no. 3348en_US
dc.subject.lccQL1 .A436 no.3348 2001en_US
dc.subject.lcshGobiconodontidae.en_US
dc.subject.lcshMammals, Fossil -- Mongolia.en_US
dc.subject.lcshPaleontology -- Cretaceous -- Mongolia.en_US
dc.subject.lcshPaleontology -- Mongolia.en_US
dc.titleGobiconodonts from the early Cretaceous of Oshih (Ashile), Mongolia. American Museum novitates ; no. 3348en_US
dc.title.alternativeEarly Cretaceous Gobiconodontsen_US
dc.typetexten_US

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
/v2/dspace/ingest/pdfSource/nov/N3348.pdf
Size:
496.56 KB
Format:
Adobe Portable Document Format
Description:
Download

Collections

American Museum Novitates