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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, firstname.lastname@example.org 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
email@example.com | THE DINOSAURICON: http://dinosaur.umbc.edu/
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