 Adult humans more closely resemble the infants of gorillas and chimpanzees than the adults.Neotenic features of the head include the globular skull; thinness of skull bones; the reduction of the brow ridge; the large brain; the flattened and broadened face; the hairless face; hair on (top of) the head; larger eyes; ear shape; small nose; small teeth; and the small maxilla (upper jaw) and mandible (lower jaw).Neoteny of the human body is indicated by glabrousness (hairless body).