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ANTH 100 week 2

by: Shayla Pedigo

ANTH 100 week 2 Anth 100000

Shayla Pedigo
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About this Document

These notes are what we went over in class because i know that our professor doesn't put the lecture slides up online...Also they are good to look at for the quiz coming up!
Anthropology 100
Dr. Richard Blanton
Class Notes
Anthropology, Anthro, 100, 100000




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This 3 page Class Notes was uploaded by Shayla Pedigo on Thursday August 25, 2016. The Class Notes belongs to Anth 100000 at Purdue University taught by Dr. Richard Blanton in Fall 2016. Since its upload, it has received 55 views. For similar materials see Anthropology 100 in Anthropology at Purdue University.

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Date Created: 08/25/16
A Bipedal Ape: The Direct Ancestor of Human, the Hominids earliest hominid found>> 5-7 MYA Genus Australopithecus. 4 MYA to 1 MYA. (the "australopithecines") Migration of the Foramen Magnum to a Central Location at the base of the cranium Some Hominid Ape Populations Begin to colonize Savanna (Grassland) Habitats after about 7 MYA --this corresponded with the spread of "C4" grasses ("C4" and "C3" are different photosynthetic pathways) in Africa --C4 grasses are more drought resistant, grow faster, and are more productive than C3. A habitat for Hominids: Tropical Forest to Savanna 3 possible advantages 1. avoid the increasing competition for resources with other hominid species as forest habitat was reduced in a changing climate. 2. --bipedal locomotion is more efficient in open environments--for ex. moving quickly across open ground between remaining patches of forest, and spotting predators. 3. take advantage of increasing grassland resources (from the C4 "revolution") Savanna Adaptation: Disadvantages --exposure to predators --loss of customary food sources (but: primate omnivorous diets) --rapid change in skeletal structure great ape spine human spine Australopithecines: bipedal, ape-like brain (the same cranial capacity as apes) -partial adaptation to terrestrial way of life. Genus Australopithecus 4 to 1 MYA -this was a successful way of life that resulted in a adaptive radiation in Africa: many new species African Savanna Hypothesis 1. Bipedalism, phase 1 Terrestrial adaptation v v predator pressure v v home base ^ carrying tools ^ v digging and chopping/scavenging/hunting ^ bipedalism Savanna- Living Monkeys (terrestrial adaptation) (e.g., Savanna Baboons) -are exposed to predation -live in large group for mutual defense (other mammals, who live in open habitats tend to live in groups) -males are large and powerful with large incisor and canine teeth (sexual dimorphism) "Hominidization: Phase 1" --bipedalism --base camp system --tooth/jaw reduction in most species of Australopithecine --probable increase in carrying, throwing, and food sharing


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