Unlike other primates, humans don't have an opposable toe structure, feet that function like hands for grasping. Opposable toes come in quite handy when monkeys or apes need to climb a tree or grasp a branch — either for leisurely dining or for quick escape from unwelcome visitors.

2018年8月15日 · Study suggests that early humans had opposable, ape-like big toes built for grasping Public domain. The earliest hominins split their days between the trees and the ground, alternately adopting...

2012年3月28日 · But unlike Au. afarensis, the latest find has an opposable big toe — rather like a thumb on the foot — that would have allowed the species to grasp branches while climbing. Modern apes have...

2018年9月6日 · Morphological features, including hallucal opposability, toe length and the longitudinal arch, have traditionally been used to dichotomize human and great ape feet as being adapted for bipedal walking and arboreal locomotion, respectively.

2012年3月29日 · The tantalizing new discovery of a few fossil foot bones shows that at least one species retained an opposable big toe, one million years after the grasping feature was thought to have disappeared. The discovery means that two different types of locomotion co-existed during early human evolution, which sheds new light on the evolution of ...

In contrast, quadrupeds have abducted (opposable) big toes which allow more flexibility in the foot to grasp onto trees during locomotion. Long lateral toes (toes other than the hallux)...

2004年5月21日 · The hypothetical ‘prehuman foot’ is suggested by Morton (1935; Fig. 2) to have still been a ‘flexible and muscular grasping organ’, i.e. with an opposable hallux (although it would be relatively lengthened), but also an enlarged heel for increased weight bearing, shorter toes than Gorilla, but no longitudinal arches.

2018年8月14日 · In this new study, scientists made 3D scans of the toe bone joints from living and fossil human relatives, including primates such as apes and monkeys, and then compared them to modern day...

2024年9月28日 · Prehensile Toes: Perhaps the most striking feature of ape feet is their long, curved toes. The big toe, or hallux, is widely separated from the other toes, much like a thumb. This opposable hallux gives apes an incredible grasping …

Compared to the foot of Au. afarensis, the Burtele foot instead has an opposable big toe—meaning that the big toe was able to move independently of the rest of the toes, similar to the toes of living apes what are similar to our own opposable thumbs. In Au. afarensis, the big toe is pulled in line with the rest of the toes, in contrast.