Re: Prosauropods & Edmarka

["Rob Gay" <rob@dinodomain.com>]

> I had thought basal theropods could pronate their hands<
I can't vouch for Eoraptor and Herrerasaurus, but in both Dilophosaurus, and
Coelophysis, the radius is locked in place with the ulna near the elbow,
preventing medial twisting.
Peace,
Rob

Student of Geology
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  In fact, it was my
> impresson that most non-avian theropods were capable of
pronation/supination
> of the manus - until that whopping semilunate carpal block came along and
> turned the wrist into a swivel joint.
>
>
>
> Jaime Headden wrote:
>
> > In well-sampled and diverse assemblages like the Morrison, we are still
> > finding new, large taxa (e.g., *Mymoorapelta*, *Edmarka*) which are very
> > distinct from their contemporaries
>
> I agree wholeheartedly - though _Edmarka_ is probably a poor choice to
> underline the point.  There's a good chance it's the same as
_Torvosaurus_.
>
>
>
>
>
> Tim
>
>
> ------------------------------------------------------------
>
> Timothy J. Williams, Ph.D.
>
> USDA-ARS Researcher
> Agronomy Hall
> Iowa State University
> Ames IA 50014
>
> Phone: 515 294 9233
> Fax:   515 294 9359
>