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RE: Late Maa North American tyrants (was RE: Validity of Alioramus)
> From: email@example.com [mailto:firstname.lastname@example.org]On Behalf Of
> Demetrios M. Vital
> Pardon my inexperience, but the N. lancensis skull reconstruction in HP
> Gregory S. Paul's PDW looks like it has a lacrimal horn (I hope that I am
> using the correct terminology for the hornlet in front of the orbit) that
> is way too big for T. rex. Obviously, I trust this reconstruction, and it
> is the only one I have access to, at the moment. Is this merely an
> ontological feature?
Actually, it was an artificial feature! As Bakker, Currie & Williams
determined, the lacrimal horns (you are using the correct term) were made of
plaster, and had been created based on Gilmore's assumption that this
specimen was a late-surviving species of _Gorgosaurus_. The best
illustrations currently available of the "Nano" skull are those by Dino
Puerla in Thom Carr's 1999 paper on tyrannosaurid craniofacial ontogeny (JVP
19(3): 497-520. Just happened to have that paper out when this email came
through...). These illustrations denote those parts which are osseous and
those which are plaster.
> P.S. What's up with "Tinker?" Is there a skeletal reconstruction yet?
Haven't seen one. Also, I've heard from those who've seen the specimen
recently that it is less complete than originally suggested.
Also, from an unrelated posting: the term "exaptation" was coined by Gould &
Vrba, not just Gould.
Thomas R. Holtz, Jr.
Department of Geology Director, Earth, Life & Time Program
University of Maryland College Park Scholars
College Park, MD 20742
Phone: 301-405-4084 Email: email@example.com
Fax (Geol): 301-314-9661 Fax (CPS-ELT): 301-405-0796