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the probable ornithiscian Trisauropodiscus is known from the Stromberg
Triassic and the early Jurassic of the SW US.<
Did I miss this original post?
Anywho, can anyone give a ref for this?
I don't understand what you mean; several LTr NA ornithischian tooth taxa
are known, plus what (if anything) has been left of *Technosaurus*.<
And, in terms of herbivore diversity, don't forget the prosauropod
tracks...something had to make them, even if we don't have the body fossils.
Are any ceratosaurs known from SA? I recall someone (Hunt? Lucas?)
suggesting that there was seperation N/S in terms of at least theropods,
with the northern areas (Nova Scotia, etc.) being dominated by ceratosaurs,
centeral areas (SW US) having a mix of ceratosaurs and herrerasaurs, and SA
having only herrerasaurs...not sure if we have a large enough sample size to
say this with any confidence...
or global migration occurred around the Tr-J boundary.<<
Hard to prevent in Pangaea...<
Student of Geology
Northern Arizona University
P.O. Box 20840
Flagstaff, Az. 86011
"A _Coelophysis_ with feathers?"
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- Re: Tr-J
- From: "Emma C. Rainforth" <email@example.com>