Re: Shapiro et al.'s new ornithomimosaur

["Tim Williams" <twilliams_alpha@hotmail.com>]

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

_________________________________________________________________
Get 10MB of e-mail storage! Sign up for Hotmail Extra Storage.  
http://join.msn.com/?PAGE=features/es