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Re: Maniraptoran arm extension

To: gigi.babcock@alumni.usc.edu
Subject: Re: Maniraptoran arm extension
From: "Chris Fisher" <killerraptor20@hotmail.com>
Date: Thu, 16 Aug 2001 08:06:13 -0700
Cc: dinosaur@usc.edu
Reply-to: killerraptor20@hotmail.com
Sender: owner-dinosaur@usc.edu

In an extant bird's wing, there is a mechanical coupling, whereby extension of the radius and ulna automatically produces extension at the carpal joint. Is there any evidence for such a coupling in non-avian maniraptoran theropods?

I beleive it is the same, since the shoulder/forelimb bones of maniraptorans are essentially the same as birds, except in birds the carpametacarpus is fused (co-ossified) into a single unit.

Chris

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