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
Isle of the Ape Isle of the Ape Isle of the Ape is an adventure module for the "Dungeons & Dragons" role-playing game "World of Greyhawk" campaign setting, in which the events occur in a magical demiplane of the same name created by the mad archmage Zagyg Yragerne. In this scenario, the player characters travel to a prehistoric island where they encounter a gargantuan ape. The module includes two new spells, and uses rules from "Unearthed Arcana". According to "From the Ashes", this adventure was set in a demiplane accessed via Castle Tenser. "Isle of the Ape", also referred to by its module code