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BIOLOGY NOTES-HUMAN EVOLUTION

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Presentation on theme: "BIOLOGY NOTES-HUMAN EVOLUTION"— Presentation transcript:

1 BIOLOGY NOTES-HUMAN EVOLUTION

2 Primates HUMANS BELONG TO THE GROUP CALLED _____________that also include monkeys and apes originally lived in trees strong hands ,fingers and ____________________thumbs relatively large brains w/ a degree of intelligence complex social behaviors primates opposable

3 Primates bipedal extended parental care
only humans can remain ____________-walking on 2 legs-for an extended time humans have the largest of primate brains humans have more developed speech bipedal

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5 II.Primate Evolution-A.Apes
usually larger than monkeys larger brains and no tail surviving apes:_________,______,_____,and gibbons genetic studies show chimps to be closest ape to humans-----more than 90% genes identical Chimps, gorillas, orangutans

6 chimps Gibbons orangutans gorillas

7 Prosimians & Anthropoids
____________________(means premonkey)-small monkeylike w/ large forward facing eyes and are night---fossilized ones were rodentlike Modern Prosimians:__________,____________ and ________________ Lorises ,pottos, lemurs and tarsiers nocturnal Prosimians loris

8 pottos Tarsier lemur

9 Prosimians & Anthropoids
________means humanlike -include New World monkeys of S. America w/ pre-hensile tails-flexible tails(example-spider monkey) anthropoids in Europe,Asia and Africa evolved into 2 groups 1)_________and 2)_________ Old World Monkeys have long prominent noses and non-prehensile tails-example-Baboon 1)New world ex-spider monkeys 2) Old World—ex-baboon anthropoid

10 Spider monkey Baboon

11 _______________all anthropoids belonging to human family
Early Hominids _______________all anthropoids belonging to human family modern human:_____ __________are scientists who study the lives and cultures of human through fossils and artifacts probably there was usually more than one a time hominids Archaeologists Homo sapiens

12 Australopithecus Fossil evidence suggests the split between human and apes happened between 5-8 million years ago Oldest fossil found may be_____________-meaning southern ape found in southern Africa million y old - __________ A. ramidus Australopithecus

13 Australopithecus 1924-_______-2.7-2.1 mya
1974-_________________-Lucy-3-4mya They are considered hominids because they are bipedal---note different pelvis Austalapithecus brain still smaller _______________and _____________-1-2 mya-thicker bones A. Africanus A. Robustus and A. boisei A. afarensis

14 A. africanus A.afarensis

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16 A. robustus A. boisei

17 Homo habilis 1964 the Leakies found __________________-1st known to use tools-direct ancestor of humans 1960's-another discovery of probably same species larger brain Homo habilis

18 Homo erectus even larger brain
migrated out of Africa and into Asia and Europe may have been able to make fire

19 Homo sapiens maybe 500,000 to 300,000 y ago
A. ___________fossils found in Germany in 1856 subspecies of Homo sapiens Europe and Asia brains as large as humans faces fairly similar w/ heavier brow burials and decorated tools religion Neanderthal

20 Neanderthals

21 Cro-Magnons 100,000 y a shared earth w/ Neanderthals....may have blended into one group may have drove Neanderthals to extinction 1st fully modern human

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