This document discusses the appearance of several hominid species throughout history including Australopithecus afarensis, Homo habilis, Homo erectus, Homo sapiens, Homo sapiens cro-magnon, and Homo sapiens sapien. Some key traits discussed include Australopithecus afarensis being only 4 feet tall with a hairy ape-like appearance. Homo habilis had a larger brain than Australopithecus but was still smaller than modern humans. Homo erectus walked fully upright and had a more human-like appearance. Homo sapiens had complex thinking abilities and used tools and clothing.