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Re: Sauropod Biology
Sim Koning wrote:
My point was simply that the extremely derived, high shouldered forms
seemed to have gone into decline after the Jurassic.
Yes, that seems to be true. In that vein, Cifelli et al. (2000) gave
_Sauroposeidon_ the species name _proteles_, meaning "perfected before the
There is some evidence that they may have survived into the late cretaceous
Carpenter and Tidwell (2004) suggest that the brachiosaurid _Sonorasaurus_
might be of Cenomanian age. Anatomically, _Sonorasaurus_ is extremely
similar to _Brachiosaurus_.