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Re: Shapiro et al.'s new ornithomimosaur




Nicholas Gardner wrote:

However, referring to more recent papers from various authors (Holtz, the AMNH team, etc.), it is more likely that the arctometatarsus was independently developed among various groups within the Coelurosauria (tyrannosaurids, ornithomimids, caenagnathids, & troodontids).

...and mononykine alvarezsaurids and avimimids (if _Avimimus_'s arctomet condition is not synapomorphic with that of caenagnathids).


How do you account for the "near-arctometatarsalian" metatarsus of _Microraptor_?



Tim

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