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Re: diplodocid radiation
>Is there any strong evidence of diplodocids present in Asia? I am
>belonging more and more convinced that Asian sauropods considered to be
>diplodocids are now being placed within the Euhelopodids or some other
>family (similar to diplodocids) as yet to be named.
The two skull genera _Quesitosaurus_ and _Nemegtosaurus_ are members of the
Diplodocoidea, and are either their own family (Nemegtosauridae) or the late
surviving members of the Dicraeosauridae. A lumper might place all
diplodocoids in the single family Diplodocidae. Whatever the case, these
two skull taxa are (probably) more closely related to _Dicraeosaurus_ and
_Diplodocus_ than to _Euhelopus_ or _Mamenchisaurus_.
[Then again, Greg Paul has restored the skull of _Nemegtosaurus_ on the body
of the sympatric sauropod _Opisthocoelicaudia_...]
>P.S. this goes for Camarasaurids also.
The Asian "camarasaurids" (esp. _Euhelopus_) are now considered a different
Thomas R. Holtz, Jr.
Vertebrate Paleontologist Webpage: http://www.geol.umd.edu
Dept. of Geology Email:email@example.com
University of Maryland Phone:301-405-4084
College Park, MD 20742 Fax: 301-314-9661