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Re: Speedy tyrannosaurs



In a message dated 95-09-12 11:57:57 EDT, Thomas_R_HOLTZ@umail.umd.edu (th81)
writes:

>!?!?!?!?!?!CARNOSAUR!?!?!?!?!?!
>
>For those who aren't up on theropod systematics, abundant evidence now
>suggests that tyrannosaurids share a more recent common ancestor with birds,
>dromaeosaurids, troodontids, ornithomimids, etc., than with Allosaurus, and
>thus are, by definition, coelurosaurs.
>
>

The only families remaining in Carnosauria are Sinraptoridae and
Allosauridae, so the group does exist, but barely. By the way, I would agree
with Brooks Britt that Megalosauridae belongs in Ceratosauria rather than
Carnosauria.

G.O.