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RE: Torosaurus is Triceratops



One possibility is that Eotriceratops and Arrhinoceratops might also be growth 
stages of the same taxon (though different from Triceratops).  This is more 
problematic, as neither is known from anywhere near the number of specimens 
that Triceratops is...
 
Guy Leahy

----------------------------------------
> Date: Tue, 13 Jul 2010 21:11:01 -0400
> From: tholtz@umd.edu
> To: dinosaur@gilvary.net
> CC: dinosaur@usc.edu
> Subject: Re: Torosaurus is Triceratops
>
> Joe wrote:
>> Question for the folks who can see the paper and have the background
>> education and experience to offer an answer.
>>
>> What effects will this have on other cladistic analyses of ceratopsians?
>
> Not too much. In most recent analyses, Torosaurus, Triceratops, and
> Nedoceratops (aka Diceratus aka Diceratops) fell out as each others'
> closest relatives in one configuration or another. Under the new taxonomy,
> they would all be the same operational taxonomic unit.
>
> --
> 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
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>