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RE: tooth question
At 11:14 PM 1/25/99 -0800, Dwight Stewart wrote:
> From: Phillip Bigelow [SMTP:firstname.lastname@example.org]
> _Nanotyrannus lancensis_ is a still-younger juvenile _T. rex_.
> officially published yet, so it's sort of up in the air.
Thomas Carr & Rick Essner's work is still in press, but I hope that it will
be published soon.
> I'd love to get Dr. Holtz's take on Nanotyrannus! :-)
Funny you should mention that, because that is a concern in one of the five
papers that have topmost code ultra priority right now. (%-S)
As I said at SVP 97, Nanotyrannus and Maleevosaurus come out (based on
character analyses) as the serial outgroups to T. rex + T. bataar. So, the
characters that unite the big forms COULD be phylogenetically significant,
or they COULD simply be the adult features lacking in Nano. & Maleevo.
Regardless of its position, it is *CLEARLY* juvenile: the bone texture is
very 'ropey', characteristic of animals still in the fast growing stages of
life. The question then becomes: is it a juvie T. rex, or a juvie something
>the results of the CAT scans (MRIs... whatever) that Dr. Bakker had
> on the Nanotyrannus skull? I recall the report of this being done,
>but not the results.
Never published. New scans are planned.
>Is Robert Bakker still convinced this is a distinct
>species of Tyrannosaur, as opposed to a juvenile Tyrannosaurus rex?
Thomas R. Holtz, Jr.
Vertebrate Paleontologist Webpage: http://www.geol.umd.edu
Dept. of Geology Email:email@example.com
University of Maryland Phone:301-405-4084
College Park, MD 20742 Fax: 301-314-9661