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Re: OLD ORNITHOMIMOSAURS



David Marjanovic wrote:

<...mention ornithomimosaurian teeth [sic] from the
Late Jurassic of Utah? Considering troodontids and
tyrannosauroids being around in the Middle Jurassic,
the surprise isn't that big.>

  No surprise at all. There is a bit of evidence to
suggest quite a few groups of coelurosaurian theropods
arose in the Late Jurassic, and some may have gone
back as far as the Middle Jurassic. Finding teeth
attributed to ornithomimosaurs (check out toothy
*Pelecanimimus*, which isn't a spinosaur by any
stretch of the imagination, from Las Hoyas) in the
Jurassic would probably be quite similar, as in
Cretaceous Pele, to troodontids; Jurassic *Koparion*
is quite interesting in this respect.

<Sad to say, but Shuvosaurus really is the senior
synonym for Chatterjeea and thus an odd ?rauisuchian.>

  Rauhut has offered the theory that Shuvo is a
ceratosaur, _sensu lato_. It wouldn't be a problem if
it was a rauisuchian (I think it's one of the coolest
non-dinosaur reptile groups) but there is
contradictory evidence, and the synonymy of the
*Chatterjeea* and *Shuvosaurus* has not been
conclusively established. I wouldn't go around saying
they were synonymous until there is evidence to
eradicate contradictory hypotheses.

=====
Jaime "James" A. Headden

  Dinosaurs are horrible, terrible creatures! Even the
  fluffy ones, the snuggle-up-at-night-with ones. You think
  they're fun and sweet, but watch out for that stray tail
  spike! Down, gaston, down, boy! No, not on top of Momma!

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