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T-Rex and "friends"



Who lived around Tyrannosaurus Rex? Is there any
fossil record of other large meat eaters in Rex Times?
A best place to find this info?
Thank you.

Andrew Simpson


--- tholtz@geol.umd.edu wrote:

> >> Which raises the question in my mind: which
> tetrapod lineages *did*
> >> disappear?
> >
> > AFAIK none. But the Paleocene fossil record is not
> terribly good, and
> > neither is my knowledge of it.
> 
> Actually, the Paleocene record IS pretty good (for
> at least some regions).
>  See, for example:
>
http://www-personal.umich.edu/~gingeric/PDGwyoming/PEmammals.htm
> 
> There are major extinctions within major clades of
> tetrapods, but not of
> the entire clades themselves. (Similar to the issue
> with forams and
> corals: diversity crashes in both, but the groups
> survive).
> 
> Thomas R. Holtz, Jr.
> Email: tholtz@umd.edu Phone: 301-405-4084
> Office: Centreville 1216
> Senior Lecturer, Vertebrate Paleontology
> Dept. of Geology, University of Maryland
> http://www.geol.umd.edu/~tholtz/
> Fax: 301-314-9661
> 
> Faculty Director, Earth, Life & Time Program,
> College Park Scholars
> http://www.geol.umd.edu/~jmerck/eltsite/
> Fax: 301-405-0796
> 
> Mailing Address:      Thomas R. Holtz, Jr.
>                       Department of Geology
>                       Building 237, Room 1117
>                       University of Maryland
>                       College Park, MD 20742 USA
> 
> 



      
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