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Re: Feduccia (was: polarity of bipedality in dinosaurs)



Ron Orenstein summarizes Feduccia's argument:

> 1. the similarities between birds and maniraptorian theropods are convergent
> 2. animals like Velociraptor are too big, heavy and earthbound to be bird
> prototypes
> 3.  anyway, they lived too late
> 4.  birds evolved from arboreal ancestors, and Velociraptor isn't the least
> bit arboreal. 

     What about Greg Paul's idea that dromeosaurs and birds are 
both descended from Archaeopteryx?

LN Jeff
0-