J. Stern & R. Sussman, American Journal of
Physical Anthropology, 1983, pp. 291 & 292.
“The fact that the anterior portion of
the iliac blade
faces laterally in humans but not in chimpanzees is obvious. The marked
resemblance of AL 288-1 (Lucy) to the chimpanzee is equally obvious…
It suggests to us that the mechanism of lateral pelvic balance during bipedalism was closer to that in apes than in humans.”