[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index][Subject Index][Author Index]
Re: SAKIS ARE _NOT_ SIFAKAS OF COURSE..
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?