Facial reconstruction of Australopithecus afarensis （圖片來源：Cicero Moraes，採用  CC BY 4.0  授權） 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 climbing