Bipedalism

   

There are multiple bones and characteristics that can be linked with bipedalism but the one I am going to talk about is the femur. Bipeds have features on their femur and these features are how Orrorin was identified as a biped. Those features include moderate intertrochanteric line that is associated with a weak femoral tubercle, large gluteal tuberosity and osseous structure distal to the tuberosity precursor of the linea aspera, shallow trochanteric fossa, presence of a groove for the obturator externus, destruction of cortex in the femoral neck, the sectional shape of the femoral neck, size of the femoral head relative to shaft diameter, the orientation of femoral head on the neck, and the shallowness of the superior femoral notch. With these characteristics we can see bipedalism in the femur and how it supported the individuals that were walking and how they held themselves up due to gravity.