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Re: Questions on Opisthocoelicaudia
On Thu, 8 Apr 1999 DRosent288@aol.com wrote:
> I have some questions on the continuing debate on the classification of
> 3. A new family, Nemegtosauridae, has been been erected for Nemegtosaurus
> and Quaesitosaurus. I have asked previously if one of those might be the head
> of Opisthocoelicaudia. (In fact, I have heard a suggestion that N. and O.
> are not
> only the same species--they may be the same *invidual*--the head may have
> washed downstream.) If O. is in fact a titanosaurid or titanosauroid, what
> does this have on the validity of Nemegtosauridae?
The family Nemegtosauridae was, I believe, named when it was generally
accepted that these animals were close relatives of diplodocids. However,
the (few) illustrations I have seen of confirmed titanosaur skulls look
strikingly like that of _Nemegtosaurus_, and this has been observed by
others as well, which indicates that _Nemegtosaurus_ is itself a
titanosaurid, and Nemegtosauridae goes out the window.