Re: Compairing the tails of Archaeopteryx and Dromaeosaurids

["Mickey Mortimer" <Mickey_Mortimer11@msn.com>]

Rob Gay wrote-

> Also include in the "have" list _Coelophysis bauri_. See my abstract on
the
> NAPC webpage for a few more details.

Although herrerasaurids and neotheropods do have longer prezygopophyses than
most other clades of dinosaurs, Coelophysis does not exhibit the extreme
state present in dromaeosaurids and the other taxa I listed.  While
Coelophysis' prezygopophyses overlap one preceeding centrum, Deinonychus'
overlap 8-10 centra.  Coelophysis does seem to have longer prezygopophyses
than most other theropod though, as allosaurids' and tyrannosaurids' for
instance only extend two-thirds or less of the central length.

Mickey Mortimer