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Australopithecus afarensis AL 288-1, Lucy Hadar, Ethiopia, 3.2 mya

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Australopithecus afarensis AL 288-1, Lucy Hadar, Ethiopia, 3.2 mya. STS 52 A. africanus, Sterkfontein, South Africa 2.3-2.8 mya. massive chewing morphologies of the robust australopithecines large teeth thick tooth enamel deep mandible sagital crest attachment for chewing muscles

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slide2

STS 52

A. africanus, Sterkfontein, South Africa 2.3-2.8 mya

paranthropus boisei oh 5 1 8 mya

massive chewing morphologies of the robust australopithecines

  • large teeth
  • thick tooth enamel
  • deep mandible
  • sagital crest attachment for chewing muscles
  • dental microwear shows scratches & pitting
Paranthropus boiseiOH 51.8 mya
slide5

Postcrania

  • relatively long upper limbs
  • hand phalanges show curving morphology
  • Suggests arboreal capabilities

A. afarensisAL 288-1, Lucy

slide6

bipedality fully developed in earliest australopithecines

Australopithecus afarensisAL 288-1, LucyHadar, Ethiopia, 3.2 mya

slide7

chimpanzee, Pan troglodytes

note the length of the pelvis

a afarensis foot adaptations for bipedlity
A. afarensis foot adaptations for bipedlity

metarsals curved showing an arch like modern humans

lewis binford
Lewis Binford
  • questioned a range of assumed behaviors of australopithecines
  • promoted taphonomic research
c k brain
C. K Brain
  • questioned associations of bones with australopithecines as food remains
  • initated modern taphonomic research