Ape years ago (Mya) the clades diverged into newer clades. The lesser apes are the gibbon family, Hylobatidae, of sixteen species; all are native to Asia. Their major differentiating characteristic is their long arms, which they use to brachiate through trees. Their wrists are ball and socket joints as an evolutionary adaptation to their arboreal lifestyle. Generally smaller than the African apes, the largest gibbon, the siamang, weighs up to ; in comparison, the smallest "great ape", the bonobo, is . Formerly, all the great apes except humans were classified as the family Pongidae, which conveniently provided for separating the human
The Hairy Ape and so starts his mental and physical deterioration. He leaves the ship and wanders into Manhattan, only to find he does not belong anywhere—neither with the socialites on Fifth Avenue, nor with the labor organizers on the waterfront. In a fight for social belonging, Yank's mental state disintegrates into animalistic, and in the end he is defeated by an ape in which Yank's character has been reflected. "The Hairy Ape" is a portrayal of the impact industrialization and social class has on the dynamic character Yank. The play is divided into eight scenes. One common analysis of the play reads