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Human Evolution
Overview ,[object Object],[object Object],[object Object],[object Object],[object Object]
Early Primates ,[object Object],[object Object],[object Object],[object Object]
First Arboreal Mammals ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
First Arboreal Mammals
Tarsiers Lemurs Loris Pottos Prosimians
Tarsier
Ring tailed lemur
Aye aye
 
Two main groups of primates: ,[object Object],[object Object]
Tarsiers Lemurs Loris Pottos 1. Prosimians
[object Object],[object Object],[object Object],[object Object],New World Monkey: Flat face Wide nostrils Prehensile tail Old World Monkey: Long snout Close nostrils Non-prehensile tail 2. Anthropoids = monkeys + apes + man
Taxonomy  ,[object Object],[object Object],[object Object]
Primate Phylogeny ,[object Object],[object Object]
Primate phylogeny that Humans Share ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Binocular Color Vision
Primate Hands
Mobile Limbs ,[object Object],[object Object],[object Object]
Other important features ,[object Object],[object Object],[object Object],[object Object]
Proconsul- Ancestor to Hominoids?
Proconsul A skull of  Proconsul africanus  from the Kenya National Museum.
Selective pressures ,[object Object]
 
Hominid Evolution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Environmental Changes Cont Drift
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
VII.  Cultural Evolution: ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
I.  Changes to the mouth ,[object Object],[object Object],[object Object],[object Object],[object Object],Chewing
 
 
II.  Changes in Brain Size ,[object Object],[object Object],[object Object],[object Object],[object Object]
 
 
A. afarensis A. africanus A. boisei A. robustus
Human Evolution
III.  Bipedalism
[object Object],[object Object],[object Object],Laetoli Footprints
Anatomical Adaptations to Bipedalism
Human and Ape Skeletal Features ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Human Skeletal Adaptations
What are the anatomical features of bipedalism? ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Bipedal Pelvis
Bipedal Femur
Bipedal Foramen Magnum
Bipedal Foot
 
Why Bipedalism?
Remember the following… ,[object Object],[object Object]
1960 Up the ladder   ,[object Object],[object Object],Trends illustrated by fossils Environmental Changes Cont Drift
Human Origin Misconceptions : ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
1960 Up the ladder Australopithecus Homo erectus Homo sapiens
1970 Branching out ,[object Object],[object Object],Homo sapiens Homo erectus Homo habilis Australopithecus africanus A. robustus A. boisei Australopithecus afarensis “Lucy” Added 1974
1991 Changing status ,[object Object],Homo sapiens Homo erectus Homo habilis A. africanus A. robustus A. boisei Australopithecus afarensis
2001  From a tree to a bush ? ? ? 1 Ma 2 Ma 3 Ma 4 Ma Homo sapiens Homo erectus Homo habilis A. africanus P. robustus Paranthropus boisei Australopithecus afarensis Australopithecus anemensis Ardipithecus ramidus P. aethiopicus Homo rudolfensis H. ergaster H. heidelbergensis Homo neanderthalensis A. garhi ? ? ?
2003 DEEPER ROOTS ? ? ? ? ? ? ? ? 1 Ma 2 Ma 3 Ma 4 Ma 5 Ma 6 Ma 7 Ma Homo sapiens Homo erectus Homo habilis A. africanus Paranthropus robustus Paranthropus. boisei Australopithecus afarensis Australopithecus anemensis Ardipithecus ramidus P. aethiopicus Homo rudolfensis H. ergaster H. heidelbergensis Homo neanderthalensis A. garhi Orrorin tugensis Gorilla gorilla Sahelanthropus tchadensis “ Toumai” Pan trogolodites
How many more? ,[object Object],[object Object],[object Object],[object Object],[object Object]
Hominid Fossil Record ,[object Object],[object Object],[object Object]
Hominid Fossil Record ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Human Evolution is Complex ,[object Object],[object Object],[object Object],[object Object]
Australopithecines  3.6 mya  ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
 
South Africa Skull
Gorilla Skull
Homo habilis  2.3 MYA ,[object Object],[object Object],[object Object],[object Object],[object Object]
Homo   erectus  1.7 mya ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Homo Egaster
Homo sapiens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],Limits on brain size * * *
Classification:  Homo sapiens ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],A unt  C lara  M ake  P eople  H appy.  H ow,  S he’s  S weet
Origin of  Homo sapiens   ,[object Object],[object Object],[object Object]
Origin of  Homo sapiens ,[object Object],[object Object]
Two Models of Human Evolution
Origin of  Homo sapiens ,[object Object],[object Object],[object Object],[object Object]
Origin of  Homo sapiens ,[object Object],[object Object],[object Object]
Homo sapiens  Out of Africa ,[object Object],[object Object],[object Object],[object Object],[object Object]
[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]
Language and Cultural Evolution ,[object Object]

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3. Human Evolution

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  1. separated.
  2. ?
  3. These prints show bipedal characteristics of nondivergent big toe, heel strike, and well-developed arch. Play Berkeley clip. Stress that bipedalism evolved before big brains;
  4. Australopithecine pelvises are far more similar to humans than to those of apes, and shows that they were undoubtedly bipedal. The pelvis of Lucy ( A. afarensis ), although not shown here, is very similar to that of A. africanus . Despite the overall similarity, australopithecine pelvises are not identical to those of humans. There are a number of differences, some of which are more obvious when viewed from other angles. This illustration is from "Humankind Emerging", edited by Bernard Campbell.
  5. Freeing the hands Providing better predator detection Reducing thermal load on body Postural feeding Long-distance walking Hunting Male provisioning
  6. Top left: Mr. Ples Middle: Taung Child Bottom left: Raymond Dart holding Taung Child.