There are important differences between the human skeleton and stride and that of ... The surfaces of the joints in our legs and between our vertebrae are enlarged, which is an advantage for ...

The human skeleton is made up of more than 200 bones ... Bones like the ribs and spine help keep the body upright, and bones like the ones you find in the arms and legs help it move.

Atlas vertebrae rarely survive in the fossil record, but the skeleton of “Little Foot,” a 3.67-million-year-old human ancestor belonging to the species Australopithecus prometheus, which was ...