Re: SAKIS ARE _NOT_ SIFAKAS OF COURSE..

[Jeffrey Martz <martz@holly.ColoState.EDU>]

George Olshevsky wrote:

> Actually, I forgot part of my own theory here (see my article in OMNI).
> Evolution of the semi-erect and fully erect stance had little if anything to
> do with flight or arboreality, but more to do with the decoupling of
> respiration from locomotion and with near-completion of the development of a
> four-chambered heart. 

     I thought crocodilians had four chambered hearts as well, and that 
this was thus presumed to be a uniting fetaure for Archosaurs.  Are you 
implying that tghis is covergence, and that "dinobirds" developed the 
feature in association with bipedality?

LN Jeff