Re: What is a Dinosaur? and semilunate carpal

["Tim Williams" <twilliams_alpha@hotmail.com>]

Matt Bonnan wrote:

> The forearms of crocodilians and most lepidosaurs are rigidly constructed.
> The radius and ulna articulate proximally and distally like part and
> counterpart pieces.  The radius does not have a rounded radial head; the
> head of the radius is usually angular, and it is physically impossible to
> move the radius about the ulna as we can do in our own forearms.

You said "most lepidosaurs".  Does this condition pertain to tree-climbing 
lepidosaurs too?

Cheers

Tim



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