Re: Archaeopteryx flight

["David Marjanovic" <david.marjanovic@gmx.at>]

I just wrote

> > But what specific features did you "personally observe" that led you to
> > this conclusion  - that tetanurine forearms are less rotatable (i.e.
> > supination/pronation) compared to coelophysids?
>
> The ulna of *Allosaurus* has a flange that locks the radius in place.
> Neither of these bones is proximally rounded in cross-section. If you look
> at it, you see immediately that it couldn't rotate.

I forgot to answer to "compared to coelophysoids". Here I have to take fig.
4-11 on p. 108 of PDW, which shows the rotation as possible in *Coelophysis*
(or *Syntarsus*), at face value.