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R: Eoraptor question

-----Messaggio originale-----
Da: Larry Dunn <majestic_cheese@yahoo.com>
A: dinosaur@usc.edu <dinosaur@usc.edu>
Data: giovedì 19 novembre 1998 9.07
Oggetto: Eoraptor question

>Why is _Eoraptor_ supposedly closer to the basal saurischian than,
>say, _Herrerasaurus_?  Is that in fact the most common opinion of the
>placement of E.?

Eoraptor lacking the derived character found in Herrerasauridae. For the
information that I have Eoraptor distinguished from all other Dinosauria for
the presence of a posterolateral process on the premaxilla, and a heterodont
dentition consisting of premaxillary and maxillary teeth leaf shaped; and
has a
generalized anatomy for a Dinosauria, infact lacking the cranial features of
Theropoda, Sauropodomorpha and Ornithischia. However, the presence of some
derived features placed Eoraptor within the Theropoda.

By and sorry for the English
Alessandro Marisa
Via A. Grandi n°18 ROVERETO (TN) ITALY
Tel: 039-0464-434658 Email: amaris@tin.it