Facial reconstruction of Australopithecus afarensis （Image source：Cicero Moraes， CC BY 4.0 ） Age Neogene, Pliocene（Zanclean-Piacenzian） 3.7-3 Ma Taxonomy Kingdom: Animalia Phylum: Chordata Class: Mammalia Order: Primates Family: Hominidae Genus: Australopithecus Species: Australopithecus afarensis Morphological description Australopithecus afarensis had a lower body already well adapted for bipedal walking, whereas the upper body still retained many features suited to clim