Re: Eoraptor (Was Re:polyphyodonty in dinosaurs)

["Mickey_Mortimer" <Mickey_Mortimer@email.msn.com>]

Rob Gay wrote-

> How far posterior are you talking about. It looks like the 3rd maxilary
> might be recurved, and the 4th is for sure. Maybe it's just my eyes, but
if
> I was to call any of the teeth leaf-shaped, 12 and further back would be
my
> choice.

Based on Sereno et al.'s figure, the fifth is certainly of standard theropod
design.  The second maxillary and fourth premaxillary are most obviously
leaf-shaped.  Note the anterior edge expands in the middle of these teeth,
forming a diamond shape.

> Also, does anyone have the ref. for the description of _Eoraptor_?

Sereno, Paul C., Catherine A. Forster, Raymond R. Rogers, and Alfredo M.
Monetta. 1993.  Primitive dinosaur skeleton from Argentina and the early
evolution of Dinosauria.  Nature 361 p. 64-66.
It will be getting it's own monograph too.

Mickey Mortimer