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Re: Velociraptor scavenged azhdarchid pterosaur



On Sun, March 4, 2012 6:47 pm, Habib, Michael wrote:
> On Mar 4, 2012, at 5:24 PM, Dann Pigdon wrote:
>
>> Show me a living analogue for a 'herbivore' with a freaking huge beak
>> and outrageously powerful
>> jaw muscles to power it and I might be convinced of the unlikelihood.
>> The jaw apparatus of
>> protoceratops seems to be over-engineered for strict herbivory. Given
>> its apparently arid or semi-
>> arid habitat, assuming opportunistic omnivory may not be such a stretch.
>> In really bad times of
>> extended drought, tackling even a velociraptor out of desperation might
>> have been worthwhile.
>
> Parrots and giant tortoises immediately come to mind.
>
> At a casual glance, there are animals with high bite forces in all of the
> major categories of feeding (i.e. herbivory, carnivory, omnivory).  While
> bite force adaptations give some idea of food preference within each
> category, I'm not sure they say anything about a preference for meat over
> vegetation.

Indeed.

And its worth remembering that "herbivory" is not just folivory: plenty of
plant tissues are pretty tough, and there are various herbiviores which
eat these.

> Michael Habib
> Assistant Professor of Biology
> Chatham University
> Woodland Road, Pittsburgh PA  15232
> Buhl Hall, Room 226A
> mhabib@chatham.edu
> (443) 280-0181
>
>


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, Science & Global Change Program, College Park Scholars
http://www.geol.umd.edu/sgc
Fax: 301-314-9843

Mailing Address:        Thomas R. Holtz, Jr.
                        Department of Geology
                        Building 237, Room 1117
                        University of Maryland
                        College Park, MD 20742 USA