5 jul 4000000 año aC - Australopithecus

Descripción:

source 1: http://www.columbia.edu/itc/anthropology/v1007/2002projects/web/australopithecus/austro.html
source 2:http://humanorigins.si.edu/evidence/human-fossils/species/australopithecus-afarensis
Fact 1: They are Bipedal (walk on two legs
Fact 2:They have more room in there brain for thinking than for sight
Fact 3:There name means southern ape from africa

Claim 1: Australopithecus's skulls are smaller than ape skulls