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Re: Triassic Sauropods
In a message dated 4/6/01 12:06:39 PM EST, firstname.lastname@example.org writes:
<< A good example of this is seen in
the photographic plates of Opisthoscoelicaudia in Borsuk-Bialynicka (1977).
My guess is that this and a lot of other minor things are long-branch
convergent in Opisthocoelicaudia and titanosaurids. There is just NO WAY
Opisthocoelicaudia is a titanosaurid, as in some cladistic classifications;
the dorsal and caudal verts couldn't be more different. Indeed, I'm fairly
sure that Opisthocoelicaudia is a junior synonym of Nemegtosaurus, as has
been proposed before; the Nemegtosaurus head probably does go with the
Opisthocoelicaudia body. Just as the skull of Nemegtosaurus is >roughly<
transitional between macronarian skull and diplodocimorph skull, so is the
body of Opisthocoelicaudia >roughly< transitional between the macronarian
body and the diplodocimorph body. Not surprisingly, Chinese euhelopodids are
basal to both Nemegtosaurus and Opisthocoelicaudia.