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Chapter 14. The Origin and Dispersal of Modern Humans. Homo sapiens sapiens. All contemporary populations- Homo sapiens sapiens . Several fossil forms (100k.y.a.) = same subspecies. African recent H. sapiens fossils -“near-modern.”.

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Chapter 14

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chapter 14

Chapter 14

The Origin and Dispersal of Modern Humans

homo sapiens sapiens
Homo sapiens sapiens
  • All contemporary populations- Homo sapiens sapiens.
  • Several fossil forms (100k.y.a.) = same subspecies.
  • African recent H. sapiens fossils -“near-modern.”
questions about the origin and dispersal of h sapiens sapiens
Questions About the Origin and Dispersal of H. sapiens sapiens
  • When did H. sapiens sapiens first appear?
  • Where did the transition take place?
    • In one region or several?
  • What was the pace of evolutionary change?
    • How fast did the transition occur?
  • How did the dispersal of H. sapiens sapiens to other areas of the Old World take place?
theories of human origins
Theories of Human Origins
  • Complete Replacement Model
  • Regional Continuity Model
  • Partial Replacement Model
complete replacement model recent african evolution
Complete Replacement Model (Recent African Evolution)
  • By Christopher Stringer and Peter Andrews.
  • Africa origin in the last 200,000 years.
  • They migrated from Africa, completely replacing populations in Europe and Asia.
  • Transition from archaic H. sapiens to modern H. sapiens anywhere except Africa?
partial replacement model
Partial Replacement Model
  • By Günter Bräuer of the University of Hamburg.
  • Earliest dates for African modern Homo sapiens at over 100,000 y.a.
  • Initial dispersal from S. Africa- environmental conditions.
  • Hybridization in Eurasia- eventual replacement.
  • The disappearance of archaic humans.
regional continuity model multiregional evolution
Regional Continuity Model(Multiregional Evolution)
  • By Milford Wolpoff, University of Michigan.
  • Populations in Europe, Asia, and Africa continued evolutionary development from archaic H. sapiens to anatomically modern humans.
the regional continuity model multiregional evolution
The Regional Continuity Model(Multiregional Evolution)
  • Question: How did modern humans evolve in different continents and end up so physically and genetically similar?
  • Explanation:
    • Due to gene flow between archaic populations, modern humans are not a separate species.
    • Earlier modern H. sapiens did not originate exclusively in Africa.
the new world
The New World
  • Bering Land Bridge over many millennia.
  • New World hominids date to about 12,000 y.a.
the upper paleolithic
The Upper Paleolithic
  • Western Europe- approximately 40,000 years ago.
  • Industries based on tool technologies:
    • Chatelperronian
    • Aurignacian
    • Gravettian
    • Solutrean
    • Magdalenian
upper paleolithic tools
Upper Paleolithic Tools
  • (a) Burin. A very common Upper Paleolithic tool.
  • (b) Solutrean blade. This is the best-known work of the Solutrean tradition.
    • Solutrean stonework is considered the most highly developed of any Upper Paleolithic industry.
cave art
Cave Art
  • Most from southwestern

France and northern Spain.

  • Grotte Chauvet
    • Aurignacian period more than 30,000 y.a.
    • Images: stylized dots, human handprints and animal representations.
    • Dozens of footprints on the cave floor produced by bears and humans.
  • Rock art-in southern Africa (between 28,000 and 19,000 y.a.)
  • Personal adornment- 38,000 y.a., beads made from ostrich shells.
  • Remarkable bone craftmanship- in the Katanda area.
    • Intricate bone tools resembling harpoons were made from the ribs of large mammals.
human evolution
Human Evolution
  • Overview of past evolution
  • What may human evolution lead to?