January 28th

January 28th - January 28th B. Types of Primates C. Future...

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January 28 th B. Types of Primates C. Future of Primates Human Evolution A. Intro B. Miocene (23-5mya) Hominoids C. Pliocene (5-2mya) Hominids Hominoids Lesser Apes Pongids Hominids Apes are our closest living relatives, not our direct ancestors. 3 genus in the family pongids. Orangutans found only on Borneo and Sumatra, they are unlike the other great apes b/c they don’t’ live in groups, males are solitary, tend to be most arborial of the great apes. Exhibit a great deal of sexual dimorphism. males tend to be much larger than females. Another genus of great apes are gorillas. Found in tropical regions of south Africa, and too big as adults to climb in trees, so they walk on the ground by knuckle walking. There is a great deal of sexual dimorphism between males and females; live in social groups of 30 or so individuals. More females than males, they eat only plants. Only about 600 left in the world. Pongid we’re most interested are chimpanzees. They are most closely related to us, share over 98% of DNA with us. More commonly studied is bonobo, they are all located in tropical south Africa. We now about them because of John Gooddall, we know so much because of her. We should care about this because in order to understand origins of human social behavior, because another place to look for evidence is to look at our most closely related relatives. Whatever chimps are doing socially might tell us what our ancestors did socially. Social groups are about the same size as gorillas, but about the same male and female ratio. Chimps occupy a space and have been known to defend that
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January 28th - January 28th B. Types of Primates C. Future...

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