The picture illustrate how Australopithecus afarensis and Homo erectus different between themself with skeletal systems.
Overview, the Australopithecus afarensis body and bones wider and than to compare Homo erectus narrow skeletal systems. Also, the first type of ancestor’s body convinience for limbe the trees, when second skeletal systems features on endurance runner.
To begin with, lower part of body with toes and achilles tendom. Early afarensis ancestor had long toes, partial foot arch and small bone as opposite modern type of human has short toes, stabilized foot arch and enlarged heel bone. To contrast Australopithecus afarensis didn’t had large hip, knee and ankle joints as endurance runner, to opposite they had small vision of this bones while the first walker had unballanced head with long snout but high, narrow shoulders, vice versa homo erectus has balanced head with short snout with low, wide shoulders. As tree climber, early ancestors has wide chest and long femoral neck adn unusual long forearm for endurance runner, which was has narrow chest, short femoral neck and short forearm. Among homo erectus gluteus maximum popular, to compare Australopithecus afarensisis ancestor with small maximus