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Re: dinosaur synapomorphies



In a message dated 5/16/2000 6:15:23 AM Pacific Daylight Time, 
tholtz@geol.umd.edu writes:

> In any case, given that herrerasaurids and _Saturnalia_ each have at best a
>  semi-perforate acetabulum, a fully perforate condition may have arisen
>  independantly in theropods and sauropodomorphs

_Guaibasaurus_ has a semi-perforate acetabulum as well.

Nick P.