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RE: New tyrannosaur articles

Quoting Tim Williams <twilliams_alpha@hotmail.com>:

> A Bayesian phylogenetic analysis indicates that an
> arctometatarsus evolved in the common ancestor of the Tyrannosauridae +
> (Ornithomimosauria + Troodontidae) clade,

And was then lost in the basalmost members of all three groups?  Hmmm...

Nick Pharris
Ph.D. Candidate
Department of Linguistics
University of Michigan