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Re: Carpometacarpus



On Tue, 30 Mar 1999 21:41:42 -0500 "Patrick Norton"
<ptnorton@email.msn.com> writes:

[snip]
> And since _Mononykus_ (a member of the 
>Alvarezsauridae) has a carpometacarpus (at least it looks like one to
me), is it >reasonable 
>to
>consider the carpometacarpus as a basal character for the Metornithes? 
>If
>not, what are the members of Aves outside Metornithes that show fusion 
>of
>bones in the wrist or hand?
[snip]

*Avimimus*, while not usually considered to be a member of Aves, is
reported to have fusion of the wrist and hand bones.  In *The
Dinosauria*, there is on page 285 (paperback) a drawing of the relevant
elements, and the condition is described as a carpometacarpus.  So, this
character may go back farther than Aves, if this interpretation is
correct (and if *Avimimus* isn't a secondarily-flightless member of
Aves). -*Thescelosaurus*
 
>Thanks.
>
>PTNorton@msn.com
>www.geocities.com/capecanaveral/galaxy/1962/


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