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Neanderthal and Emergence of Mind What it means to be Human. Readings: Scarre Chapter 1, Also: pages 55,59,74-75, and Chapter 4. 6 million years of human development in one class period. Comparative morphology Bipedalism Neanderthal evolution Dating technology.

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Key topics

Comparative morphology

Bipedalism

Neanderthal evolution

Dating technology

Paradigms of imagery: what is a Neanderthal?

Modern Humans

Humanity: What is it?

Key topics


Comparison of chimp and human skeletal structure
Comparison of Chimp and human skeletal structure


Comparative morphology

Examines skeletal structures

Dentition

Craniometrics: skull development

Genoype/phenotype

Humans do not descend from chimps, but we are distant cousins with an ancient common primate ancestor.

Comparative morphology


Skulls

Human

Chimp


Leatoli (see Scarre 59)

The issue of bipedal locomotion.

In the old model: human ancestors evolved large brains, invented tools, then became bipedal as they came to depend on tools…the “smart ape hypothesis.”

Considerable evidence supports the hypothesis that bipedalism was well established 4.6 million years ago, before tools and large brains… upright ape hypothesis”


Leatoli evidence
Leatoli evidence

  • Anatomically human foot, knee, pelvis, posture, teeth, and hand evolved long before large brains or human-like facial structures.

  • Proto-human creatures were bipedal 4.6 mya and probably earlier.



Dentition

Chimp

Human

A.afarensis


The oldest known manufactured tools are dated at 2.6-2 m.y.a.,

Found in various parts of Africa, and are grouped under the name Oldowan pebble tools, given them by the Leakeys in 1931.


The Pleistocene (2 m.y.a. to 10,000 B.P.) is the epoch of human life.

Lower Pleistocene (2 to 1 m.y.a.): Australopithecus and early Homo

Middle Pleistocene (1 m.y.a. to 130,000 B.P.): Homo erectus and archaic Homo sapiens

Upper Pleistocene (130,000 to 10,000 B.P.): modern Homo sapiens


Dating technologies

C14 human life.

Stratigraphy

K/Ar-Ar

Fission tracking

Paleomagnatism

Biostratigraphy

Tuff correlations

Relative dating

Dating technologies


Neanderthal
Neanderthal human life.

  • Was Neanderthal a separate species of human or something else?

  • Could Neanderthal and archaic humans interbreed? Latest DNA study (2010) suggests yes—we all have a little Neanderthal in us.

  • What became of Neanderthal?

  • Did Neanderthal exhibit human behaviors?



Direct line model. human life.

No longer considered valid.

H. sapien sapiens

H. sapiens (archaic)

H. neanderthal

H. erectus

Homo habilis

Australopithicus (all species)


Branching tree model. human life.

The French

H. Sapiens sapiens

H. Neanderthal

H. habilis

H. Sapiens (archaic)

H. erectus

Australopithicus

H. Florensis (“hobbits”)


A human life.

Direct ancestor

H. sapien

H. neanderthal

B

H. neanderthal

Cousin, no overlap

H. sapien

C

H. neanderthal

H. sapien

Not close enough to be same species, overlap


Archaic human life.


Key elements of cranial morphology human life.

Modern

Homo sapien

(minus lower jaw)


Changing images
Changing images human life.

  • New data and new sensibilities have inspired a rethinking about Neanderthal.

  • Forensic science has changed our perception of physical appearances (phenotype).



Neanderthal as frat boy run amok. human life.

Brutish behavior considered Neanderthal.



Neanderthal (?) child 30,000 years old.

Modern child



Theory of human migration origins of modern humans
Theory of human migration: origins of modern humans hybrid?

  • Two competing hypotheses currently debated. These hypotheses will be affected by new DNA research.

  • Out of Africa 1 and Out of Africa 2 (next week)


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