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Re: T.rex predation

At 08:54 AM 9/18/97 -0700, Betty Cunningham wrote:
>Thomas R. Holtz, Jr. wrote:
>> However, I WILL leave off this puzzler (which has been alluded to already in
>> this discussion): how do you demonstrate that Tyrannosaurus (or any other
>> taxon) killed live prey?
>Duh-by having the same marks that indicate scavenging on carcasses show
>up on prey animals that are partially healed or fully healed (indicating
>an attack while the prey animal was still alive and that the prey animal
>got away)

Yep: barring a "fighting dinosaurs" specimen (requring one HECK of a
sanddune!), the best evidence that _Tyrannosaurus_ is a predator is to show
that it was on occasion an unsuccessful predator...

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