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Re: Gorgo fingers

At 05:05 PM 1/16/98 -0800, you wrote:
>Subject: Gorgo fingers                                       5:56 PM    
>  On a few mounts of Gorgosaurus Libratus, I've noticed the long ignored 
>digit III.   It was noted in Lambe's 1914 paper, but I rarely see it 
>illustrated.  Would it be visible?  The arm cast I have shows that it is 
>quite prominent.  Is there any evidence to suggest that this is not supposed 
>to be there?  If the greatly reduced finger is indeed on this animal and not 
>on Albertosaurus ( as far as I know of) than is that another good reason to 
>separate the two into different families.  What does it say about Tyrannosaur 

That's metacarpal III, not digit III.  That is, there was no finger on it.

Jurassic Park's mutant raptors notwithstanding, the metacarpals would all be
enclosed together within a fleshy palm, as they are in all amniote.  At most
there would be a slight enlargement at the spot, but no more than that.

Thomas R. Holtz, Jr.
Vertebrate Paleontologist     Webpage: http://www.geol.umd.edu
Dept. of Geology              Email:th81@umail.umd.edu
University of Maryland        Phone:301-405-4084
College Park, MD  20742       Fax:  301-314-9661