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Re: Horner's Pachy Lumpin' - Your Thoughts?



  I seem to recall pitting to occur in adult Einiosaurus' orbital horns.  I 
think the reference was Sampson?

D


On Jan 11, 2010, at 11:35 AM, Thomas R. Holtz, Jr. wrote:

>> From: owner-DINOSAUR@usc.edu [mailto:owner-DINOSAUR@usc.edu] 
>> On Behalf Of john hunt
>> 
>> There are a number of mass death bone beds of ceratopsians.  
>> Do these show
>> ontonogenic variations that require absorbtion?       
>> 
> 
> Yes: the aforementioned Pachyrhinosaurus ones, and Achelousaurus. See
> references in my last posting.
> 
> 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/
> 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 
>