The information depicts the bone structures of two family origins of new age individual.
Overall, Australopithecus afarensis having bigger figure than Homoerectus but both are approximately at the same heights.
Australopithecus afarensis having broader ribs, longer and bigger hands, larger skull with long snout, wider foot with long toes and partial foot arch . Spine is short with bigger pelvic bone.
In contrast, Homo erectus appears narrow chest, appropriate length of forearm, smaller skull with balanced head, narrow chest, and shoter toes with stabilized foot arch. However, lower limb having larger hip, knee, ankle joints with longer achilles tendon in comparison to Australopithecus afarensis.
The appearance of Australopithecus afarensis shows that the body structure correlates with the their activity as a tree climber. Meanwhile, Homo erectus balanced statue represent that they are a endurance runner. Both are standing walker with different anatomy of the plantar and foot with different stability.