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Re: Metatarsal fusion/nonfusion: birds/theropods
Jim Kirkland cc'd a message to both the list and to Brooks Britt.
Brooks' response was intended for the list, but it got rejected since
Brooks isn't subscribed. I'm forwarding it for your edification --
MR:
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From: Brittpaleo@aol.com
Date: Mon, 24 Mar 1997 10:56:56 -0500 (EST)
Message-ID: <970324105656_-1303793962@emout01.mail.aol.com>
To: th81@umail.umd.edu
cc: dis@gj.net, dinosaur@usc.edu
Subject: Re: Metatarsal fusion/nonfusion: birds/theropods
I have made a point of looking for additional example of fused
metatarsi in Ceratosaurus and to date the only example of fusion is
that of the type specimen at the USNM. As I noted in my master's
thesis (1991, BYU Geology Studies, p 58) on the theropods of Dry
Mesa, the Ceratosaurus metatarsals from Dry Mesa are unfused. We
have several Ceratosaurus metatarsals with the Fruita Ceratosaurus
(in press as a new species by Madsen and Welles) and they show no
evidence of fusion. Ken Stadtman and I are working on a new
Ceratosaurus specimen from Utah but no metatarsals were found with
it.
In summary, I have long been convinced that the fused metatarsals in
the type of Ceratosaurus are pathologic.
Brooks