Human Evolution

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Author:
k.kauneckas
ID:
183391
Filename:
Human Evolution
Updated:
2012-12-02 21:26:19
Tags:
Evolution
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Description:
Evolution
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  1. Sahelanthropus Tchadensis
    Date
    7 million years ago
  2. Sahelanthropus Tchadensis
    Site Found
  3. Sahelanthropus Tchadensis
    Features
    • foraman magnum under skull
    • bipedal
    • smaller canine teeth
    • no canine diastema
    • face slightly prognathic, not like ape
    • valgus knees
  4. Orrorin Tugenesis
    Date
    6 million years ago
  5. Orrorin Tugenesis
    Site Found
    Tugen hills in Ethiopia
  6. Orrorin Tugenesis
    Features
    bipedal
  7. Ardipithecus Ranidus
    Site Found
    Aramis, Ethiopea
  8. Ardipithecus Ranidus
    Date
    4.4 million years ago
  9. Ardipithecus Ranidus
    Features
    • foreamen magnum is human like
    • prognathic face
    • 350 cm brain
    • canines project a bit
    • short thumbs
    • long fingers
    • short and broad pelvis
    • foot is between ape and human
    • big toe is opposible
    • other toes are human like
  10. Australopithecus Anamensis
    Date
    3.9-4.2 million years ago
  11. Australopithecus Anamensis
    Site found
    Allia Bay, Kenya
  12. Australopithecus Anamensis
    Features
    • teeth ape like
    • projecting molars
    • bipedal
  13. Australopithtcus Afarensis
    Date
    2.9-3.9 million years ago
  14. Australopithtcus Afarensis
    Site found
    Hadar, Ethiopeia
  15. Australopithtcus Afarensis
    Features
    • skull is ape like
    • prognatic face
    • projecting canine
    • foramen magnum under skull
    • small body
    • long arms
    • short  legs
    • pelvis like modern human
    • human feet
    • large molars
  16. Laetoli Foot Prints
    • made by mom, dad and child
    • in line big toe
    • arch in foot
    • large heel
    • 3.5 million years ago
    • made by A. Afarensis
  17. Australopithecus Africanus
    Date
    2-3.5 million years ago
  18. Australopithecus Africanus
    Features
    • skull ape like
    • no cresting on skull
    • no projecting canine
    • small body
  19. Australopithecus Africanus
    Site found
    Taung, South Africa
  20. Kenyanthropus Platyops
    Features
    • bipedal
    • flat face
    • smaller molars
    • more like modern human
  21. Kenyanthropus Platyops
    Site Found
    Lomekwi, Kenya
  22. Kenyanthropus Platyops
    Date
    3.5 million years ago
  23. Homo Ergaster
    Date
    1.2-1.8 million years ago
  24. Homo Ergaster
    Features
    • Brain size is closer to modern human
    • range at this point
  25. Homo Ergaster
    Site
    Africa
  26. Nariokotome Skeleton
    Dates to 1.53 mya

    • Oldest skeleton that is this
    • complete
    • 80% complete
    • Provides key information on body
    • size & proportions
  27. Homo Erectus
    Site
    Asia
  28. Homo Erectus
    Features
    • large brain and body
    • thicker skull bone
    • Presence of more tori on skull
    • Angular torus
    • Sagittal keel
  29. Homo Erectus
    Date
    1.8 million years to 100 ky/r
  30. Archaic Homo sapiens
    Date
    130,000 – 600,000 years
  31. Archaic Homo sapiens
    Features
    • More derived than Homo erectus or ergaster
    • More derived traits in their
    • skulls
    • Smaller brow ridges
    • Thinner skull bone
    • Other tori getting smaller as well
    • Less prognathic faces
    • Brain size within the modern human
    • range Average = 1390 cc
  32. Archaic Homo sapiens
    Sites
    • Found throughout the Old World
    • Europe, Asia, Africa
  33. Neandertals
    dates
    27,000 – 150,000 yrs
  34. Neandertals
    sites
    Europe and Middle East
  35. Neandertals
    Features
    • larger brain than us
    • Large brow ridges
    • Mid-facial prognathism
    • Large nose
    • Large incisors
    • Long & low skull
    • Occipital bun
  36. Modern Homo sapiens
    dates
    150,000 years
  37. Modern Homo sapiens
    sites
    Africa
  38. Modern Homo sapiens
    features
    • Brain size avg = 1350 cc
    • High, rounded skull
    • Tall, rounded forehead
    • Small/no brow ridges
    • No facial prognathism
    • Projecting chin on jaw
    • Smaller teeth
  39. Robust Australopithecines
    dates
    2.5 million years ago
  40. Robust Australopithecines
    sites
  41. Robust Australopithecines
    features
    • As chewing muscles get bigger, we
    • see the growth of sagittal and nuchal crests and strong postorbital
    • constriction
    • Extremely large molars, up to 4-5
    • times as big as a modern human!
  42. Australopithecus aethiopicus
    dates
    2.5 million years ago
  43. Australopithecus aethiopicus
    sites
  44. Australopithecus aethiopicus
    features
    • Has some more derived, robust
    • traits
    • Large sagittal crest, large back
    • teeth, broad face
    • Very prognathic face, big incisors and canines
  45. Australopithecus boisei
    sites
    East Africa
  46. Australopithecus boisei
    dates
    1.2-2.3 million years ago
  47. Australopithecus boisei
    features
    • Broad, flat, “dished” face
    • Sagittal and nuchal crests
    • combined with strong postorbital constriction (huge chewing muscles)
    • Small incisors and canines
    • Huge molars and premolars
  48. Australopithecus robustus
    sites
    South Africa
  49. Australopithecus robustus
    dates
    1.5-2 million years ago
  50. Australopithecus robustus
    features
    • Traits are very similar to A.
    • boisei
    • Broad “dished” face with flaring cheeks
    • Sagittal and nuchal crests
    • Postorbital constriction
    • Small front teeth and very large
    • back teeth
  51. Paranthropus
    • Some scientists (like your
    • textbook authors) prefer to place the robust australopithecines into a
    • different genus, Paranthropus (“beside man”).

    • This different genus name reflects
    • differences in opinions about how these robust fossils are related to the other
    • australopithecines.
    • Whether you see them referred to
    • as Paranthropus or Australopithecus, all the features and
    • characteristics we will talk about are the same.

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