Ch16 Primate&Human Evolution

Ch16 Primate&Human Evolution - Human Classification...

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Human Classification Animal Kingdom Cordate Phylum Mammal Class Primate Order Hominoid Family Homo Genus sapiens speices
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Primate Order characteristics: Better sight than smell 3-D Sight Limbs for climbing Manipulate tools Relatively large brains
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Characteristics of Hominid Family: Bipedal Smaller Canine Teeth Ground Dwellers
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In 1978 in Laetoli, Kenya, a research team led by British paleoanthropologist Mary Leakey discovered these 3.6-million-year-old human footprints preserved in a layer of hardened volcanic ash. Two early humans of the species Australopithecus afarensis left the footprints as they walked across the African savanna. John Reader/Photo Researchers, Inc. "Footprints From the Past," Microsoft® Encarta® Encyclopedia 2000. © 1993-1999 Microsoft Corporation. All rights reserved.
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Great Apes”= Gorillas, Chimpanzees & Orangutans (Family Pongidae?)
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About 98% of the genes of chimpanzees & humans are the same, making them our closest relatives of the primates
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Skull Comparisons:
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Human Ancestors
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Homo erectus , Australopithecus ,& Human
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Walking upright: Bipedalism
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Unlike their ape ancestors, early humans had anatomical adaptations for upright walking. The early human species Australopithecus afarensis had a wide and short pelvis and femurs (upper leg bones) that angled inward toward the knees. These adaptations provided side-to-side balance and a fulcrum for the hip muscles to hold the torso erect. In contrast, apes, such as chimpanzees, have a tall and narrow pelvis from
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Ch16 Primate&Human Evolution - Human Classification...

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