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Re: SEGNOSAUR 2

<The pneumaticized basisphenoid is a segnosaur autapomorphy.>

Actually, it's an *Erlikosaurus* autapomorphy, as only this genus of 
this group is known with a braincase; when a different skull pops up 
with this feature, then it becomes an autapomorphy of that next upper 
taxon which will include Erliko and "unnamed segnosaur".

Jaime A. Headden


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