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RE: Evolution of tyrannosauroid bite power
What is the bite power compared to other known
Tyrannosaurs such as Albertosaurus, Daspleteosaurus et
--- "Thomas R. Holtz, Jr." <email@example.com> wrote:
> > From: ptnorton [mailto:firstname.lastname@example.org]
> > Sent: Wednesday, December 19, 2007 6:37 PM
> > To: email@example.com; firstname.lastname@example.org;
> > Subject: Re: Evolution of tyrannosauroid bite
> > I'm wondering if the evolutionary increase in the
> > strength of tyrannosaurids is more a function of
> the adaptive
> > response of the animal as a *system* to its
> > rather than just as some selective pressure acting
> on the
> > jaws alone. For example, it seems to me that an
> > shift in behavior, from snatching and manipulating
> small prey
> > (as in *Guanlong vucaii*, in which the hands
> could do a
> > large part of the work) to using the jaws to
> dispatch larger
> > prey as quickly as possible (as in *T.
> > rex*) would preferentially select for relatively
> smaller arms
> > and relatively larger jaws. Animals are complex
> systems and
> > need to be evaluated as such, more so than as a
> series of
> > individual elements.
> Well, of course, and I think everyone working on
> this would agree exactly
> with that scenario.
> But a biomechanical analysis must needs focus on one
> particular part of the
> organism, and later be integrated into other
> comparable systems.
> Thomas R. Holtz, Jr.
> Email: email@example.com Phone: 301-405-4084
> Office: Centreville 1216
> Senior Lecturer, Vertebrate Paleontology
> Dept. of Geology, University of Maryland
> Fax: 301-314-9661
> Faculty Director, Earth, Life & Time Program,
> College Park Scholars
> 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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