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Re: Triassic dino tracks in this week's Science

Tim Donovan wrote-

> If Aliwalia is valid, doesn't this large Norian theropod, together with
Antetonitrus and Isanosaurus, make the case for continuty across the Tr-J
much stronger than previously thought?

How so?  There's no proposed Jurassic descendent of Aliwalia, and we already
know of very closely related taxa that cross the Tr-J boundary- Coelophysis
and "Syntarsus", Procompsognathus and Segisaurus, etc..

Mickey Mortimer