Don Johanson Don Johanson

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Species: Australopithecus afarensis• Hadar + Laetoli fossils• Fully bipedal• Oldest hominid, 3-43mya• Smallest brain• Extreme dimorphism• Transitional dentalmorphology• Common ancestor of otherhominids
<strong>Don</strong> <strong>Johanson</strong>’s Phylogeny in Lucy (1981)H. sapiens1 million yearsA. robustusH. erectus2 million years1470A. africanus H. habilis3 million years4 million yearsA. afarensisLucy & “First Family”Laetoli Footprints5 million years?
Page 2 and 3: Hadar Knee Joint Australopithecus a
Page 4: A.L. 333 “First Family”Australo
Page 7 and 8: Dating Hadar• Potassium-Argon•
Page 9 and 10: Richard Leakey’s Phylogeny in Ori
Page 11 and 12: How are hominid teeth different?•
Page 13 and 14: Don Johanson’s Phylogeny in Lucy
Page 15: Don Johanson’s Phylogeny in Lucy
Page 19 and 20: A Scientific Objection to Johanson
Page 21: Next...Explaining Hominids

Don Johanson Don Johanson

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