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Re: tyrannosaurid ancestry, raptors and other fun things...
On Sat, 13 Nov 1999 Buckaroobwana@aol.com wrote:
> Can anybody tell me how closely related tyrannosaurids are to dromeosaurids.
> I know that the current theory is that the tyrannosaurs evolved from smaller
> carnivorous dinosaurs, but which ones?
Not dromaeosaurids. Early (possible) members of the tyrannosauroid lineage
are not that well known -- _Stokesosaurus_ and _Siamotyrannus_ and
_Iliosuchus_ and _Itemirus_. The placement of these animals as
tyrannosauroids remains contentious, though.
for several diagrams on coelurosaurian relationships.
> Is there any evidence to support Greg Pauls contention that
> tyrannosaurs arose from advanced allosaurs from the early Cretaceous?
Tyrannosaurids are now regarded as large coelurosaurs, not allosauroids.
(They really need to fix that display at the AMNH...)
--T. Michael Keesey
email@example.com | THE DINOSAURICON: http://dinosaur.umbc.edu/
AOL IM: Ric Blayze | WORLDS: http://www.gl.umbc.edu/~tkeese1/