[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: Beipiaosaurus and sauropod ancestry
On Mon, 21 Jun 1999 Dinogeorge@aol.com wrote:
> In a message dated 6/21/99 0:12:20 AM EST, email@example.com writes:
> << Really, it appears to be a weight-related feature, but hopefully this can
> be clarified by further study >>
> Don't think it's weight-related. Alxasaurus is a far smaller animal than
> Tyrannosaurus, yet Alxasaurus shows the segnosaurian foot whereas
> Tyrannosaurus has a typically theropodan (albeit massively built, of course)
> foot with highly reduced first toe. If it were purely a weight issue, one
> would expect tyrannosaurids and many other large theropods to show
> segnosaurian readaptation of the first toe.
Perhaps it's a graviportal issue?
--T. Michael Keesey
firstname.lastname@example.org | THE DINOSAURICON: http://dinosaur.umbc.edu/
AOL IM: RicBlayze | WORLDS: http://www.gl.umbc.edu/~tkeese1/