ANTH 110 Lecture 5: Anthro. lecture 5.4
Document Summary
Apes: hylobatidae/hylobates (family)- gibbons and siamangs (lesser apes, pongidae/pongids (family)- orangutans, gorillas, chimps (great apes) The hominoid group includes three separate families: the lesser apes or hylobates (gibbons and siamangs), the great apes or pongids (orangutans, gorillas, and chimpanzees), and humans, or hominids/hominins. Several characteristics separate the hominoids from the other primates. Diet characterized in part by fibrous plant materials. Found in the jungles of southeast asia. Relatively small weighing between 11 and 15 pounds for the gibbon, 25 for the siamang. Long arms and curved fingers adapted for brachiation. Live in small, monogamous (primary) family groups that mate for life with offspring. Low levels of sexual dimorphism and high male parental investment in offspring. Orangutans live only on the indonesian islands of borneo and sumatra (asiatic great. Pronounced sexual dimorphism (males twice as large as females, have large cheek pads, throat pouches, beards, and long hair) Orangutans historically studies by birute galdikas and considered solitary (expect mother and young)
