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Re: Sinornithomimus, new dino in Acta Palaeontologica Polonica
Ben Creisler wrote-
> We propose a paleogeographically based division of
> the Tyrannosaurinae into the Asiatic forms (Tarbosaurus
> and possibly Alioramus) and North American forms
> (Daspletosaurus and Tyrannosaurus).
But Currie et al. (2003) place Daspletosaurus as the sister group of the
Asiatic taxa. Notably, both this clade and the Asiatic clade are supported
by a single synapomorphy. Wonder what would happen when Holtz's (2001)
postcranial characters are added.