Re: An alternative to ST and AAT

Gerrit Hanenburg (
Tue, 19 Nov 1996 14:40:14 GMT (Paul Crowley) wrote:

>But any serious thought on Lucy's morphology should lead to
>the same conclusion. If you can't stride, you must waddle.

You are confusing concepts.
Both Lucy and modern humans have what is called striding bipedalism.
Striding bipedalism refers to the kind of locomotion in which the body
is supported by first one leg and then the other,and as the body
passes over the supporting leg,the other leg swings forward in
preparation for the next support fase. During transfer of the body
from the trailing to the leading leg there is a brief period when both
feet are on the ground.
Waddling only refers to the an excessive lateral displacement of the
body during striding. Waddling does not exclude striding.