The two traits that define a hominin are bipedalism and nonhoning chewing. In bipedalism, the hominin walks with two legs instead of using four limbs. The foramen magnum is located at the bottom of the skull rather than the front. It makes the hominin’s head on the top of its body instead of its head sticking out front of the body. The head then connects to the spine. In this case, the spine is s-shaped since the hominin stands upright, whereas a c-shaped spine is most prevalent in apes. The curvature of the spine causes the ape to use the four limbs to maneuver. The shape of the pelvis is rather compact, but it enables a well-balanced activity such as walking, standing, and running. The long legs allow the hominin to travel to farther distances
