Re: An alternative to ST and AAT
Paul Crowley (Paul@crowleyp.demon.co.uk)
Tue, 10 Dec 96 13:12:42 GMT
In article <19961209194100.OAA20504@ladder01.news.aol.com>
> (Paul Crowley) writes:
> >In the first form of locomotion its trunk is horizontal; in
> >the second it's vertical. It cannot have a trunk at 45 degrees
> >or at angles other than ~0 or ~90 degrees. It cannot move
> > . . . .
> >orientate; its legs will get straighter and its knees will
> >develop locking mechanisms. But each of these changes will
> >reduce its ability to progress quadrupedally.
> Hello Lamark!
Bipedalism probably came about from a new niche which
encouraged a quadrupedal ape to adopt a bipedal stance.
Those individuals that were better at it left more
descendants. What need is there to invoke Lamark?