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Please note: the next year or so should see revisions in essentially all
things tyrannosauroid. Expect major osteological and taxonomic revisions of
nearly every currently named (and a soon-to-be named or two) tyrant.
Without spilling other peoples beans, I can at least say that for my part,
_Alioramus_ NOW comes out in my analyses as the sister group to
albertosaurines + tyrannosaurines OR as a tyrannosaurine closer to
_Tyrannosaurus_ and _Tarbosaurus_ than to all others. Currie, Hurum and
Sabath have an alternative arrangement.
The ontogenetic status of _Alioramus_ is less certain than one might think;
additionally, several published anatomical descriptions of it are
less-than-accurate given new studies.
Or, in other words, wait for the papers... :-)
> Holtz also included *Siamotyannus* in his matrix, and it came out basal
> to all other tyrannosaurs; no non-coelurosaurs were included in the
> matrix, which makes this matrix difficult to test the theory of a
> carnosaur relationship for *Siamotyrannus*.
Indeed. However, my new studies (including, for example, my 2001 SVP
presentation) find _Siamo._ to be a basal carnosaur rather than a
> He also included
> *Shanshanosaurus*, but this taxon has been indicated to possess several
> juvenile features and is probably a juvenile specimen of *Tarbosaurus*
> (Dong and Currie, 2002).
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