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Bipedal
two footed, hominin
Changes from becoming bipedal
1. smell to sight 2. parental investment 3. cranial capacity
Prehensile
capable of grasping with hands and feet
Encephalization
increased ratio of brain mass to body size primate ratio of brain size to body size exceeds that of most animals
Apes
brachiation larger brain, long arms no tail longer life spans
Lesser Apes
smaller body size less sexual dimorphism more tree swinging tail-less Gibbons
sexual dimorphism
the biological and behavioral differences between males and females
Old World Monkeys
1. larger than new world monkeys 2. sharp noses 3. non-prehensile tails 4. sexual dimorphism 5. rough skin over butt
New World Monkeys
1. prehensile (grasping) tails 2. flat nosed 3. relatively small
What type of primate has downward facing nostiles?
old world monkeys
What kind of primate has a prehensile tail?
New World Monkeys (spider monkey)
What kind of primate does not have a tail?
Apes (gorilla)
What are some examples of "Greater Apes"?
Gorillas, Orangutans, chimpanzees
Strepsirrhines
SE Asia Lemurs
Haplorrhines
Tansiers SE Asia, Americas, Africa, Asia Humans
Platyrrhines
The Americas New World Monkeys
Catarrhines
Asia and Africa Old World monkeys
Whatmajor changes in primate evolution did cooling periods drive?
migrated out of old world & colonized into the new world Glacial period opened up land bridges  Cold Adaptations Large game hunters & gatherers migrate into the Americas
What are some examples of climate warming in the distant past, and what changes in primate evolution occurred then?
Mammalian radiation- without big predators, smaller mammals and predators explode and become the dominant life forms
What effect did continental drift have on primate evolution in the distant past?
mammals arrived in Australia and developed parallel to those everywhere else, but as marsupials instead of placental mammals
Miocene
Time period from 23 to 5 mya (million years ago) age of apes
Oldowan tools
earliest stone tools, found with Homo habilis with cores, flakes and hammerstones
Acheulean hand axe
lower Paleolithic tool tradition associated with Homo erectus Carried over long distances, used in cutting and butchering, wood work and vegetable prep.
Levallois technique
flake tool manufactured by Neandertals Uniform flakes were chipped off a specially prepared core of rock.
Behavioral modernity
fully human behavior based on symbolic thought and cultural creativity
Early examples of behavioral modernity
1. cave paintings 2. jewelry 3. red ochre (body paint) 4. religious/ritualistic burials 5. sculptures 6. engravings 7. polished tools
H. floresiensis
The hobbit Homo floresiensis seemed to outlive bigger bodied and brained homininsdespite its small stature. Island of Flores is locked off by bodies of water as well. Diseased skulls and brains are sharper and underdeveloped.
Why did we walk upright?
less skin exposed to solar radiation arms free for carrying energy efficient
Why do we have large brains?
in order to deal with the demands of cultural and biological changes better tool making skills survival
What does it mean to be an anatomically modern H. sapien?
1. no brow ridge 2. nearly vertical forehead 3. small lung capacity small chest/torso
When did H. sapiens expand world wide?
~50k bp They followed herds of animals for food and later settled for domestication and farming
Hominin species
1. Aridipithecus (5.8-4.4 mya) 2. Australopithecus anamensis (4.2-3.9 mya) 3. Australophithecus afarensis (3.8-3.0 mya) 4. Homo habilis (2.4-1.4 mya) 5. Homo erectus (1.9-0.3 mya) 6. Archaic Homo sapiens (300,000-28,000 ya) 7. Neanderthals (130,000-28,000 ya) 8. Homo florensiensis …
Broad-spectrum revolution
Period beginning around 15,000 b.p. in the Middle East and 12,000 b.p. in Europe, during which a wider range, or broader spectrum, of plant and animal life was hunted, gathered, collected, caught, and fished; revolutionary because it led to food production. People began working in communi…
Locations and time periods where domestication was independently invented
Central America- maize, beans, squash, turkey, dogs (8,000-4,700 ya) ·         Andes- squash, potatoes, quinoa, beans, guinea pigs (10,000-5,000 ya) ·         Middle East- wheat, barley, sheep, goat, cattle, pig (10,000 ya)/ ·         China- rice, millet, dog, pig, chickens (8,500-6,50…
Hypotheses for why states develop
1. Hydraulic systems Wittfogel: one cause of state formation is the need to regulate hydraulic (water-based  agricultural economies.) 2. Long distance trade routes 3. Population, war, circumscription Multivariate theory
Egalitarian society
belief in the equality of all people, especially in political, social, or economic life, no hierarchy.
Ranked society
A society that ranks individuals in terms of their genealogical distance from the chief. Closer relatives of the chief have higher rank or social status than more distant ones.
Stratified society
A society’s categorization of its people into rankings of socioeconomic tiers based on factors like wealth, income, social status, occupation, abilities and power.
Chiefdom
a form of hierarchical political organization in non-industrial societies usually based on kinship, and in which formal leadership is monopolized by the legitimate senior members of select families or 'houses'. These elites form a political-ideological aristocracy relative to the general …
State
Form of social and political organization that has formal central government and a division of society into classes. First developed in Mesopotamia Taxation Social stratification (wealth, power, prestige)
Why do states collapse?
1. changes in population dynamics 2. cultural change 3. destratification 4. foreign invasion

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