Homo sapiens are classified as follows: Kingdom Animilia, Phylum Chordota, Class Mammalia, Order Primates, Family Hominidae, Genus Homo, Species H. sapiens, Subspecies H. s. sapiens. There are three theories of human origin: the complete replacement model, regional continuity model, and partial replacement model. The partial replacement model proposes that early Homo sapiens originated over 100,000 years ago in Africa and initially dispersed from South Africa, hybridizing with resident groups as they moved into Eurasia and eventually replacing them.

1. H. Sapiens By: Dustin Baker and Mallory O’Bryant

2. Classification Kingdom: Animilia Phylum: Chordota Class: Mammalia Order: Primates Family: Hominidae Genus: Homo Species: H. sapiens Subspecies: H. s. sapiens

3. Theories of Human Origin Complete Replacement Model Regional Continuity Model Partial Replacement Model

4. Partial Replacement Model Proposed by Günter Bräuer of the University of Hamburg. Postulates the earliest dates for African modern Homo sapiens at over 100,000 y.a Initial dispersal of H. sapiens sapiens from South Africa was influenced by environmental conditions. Moving into Eurasia, modern humans hybridized with resident groups, eventually replacing them. The disappearance of archaic humans was due to hybridization and replacement.

5. The Regional Continuity Model Associated with paleoanthropologist Milford Wolpoff of the University of Michigan. Populations in Europe, Asia, and Africa continued evolutionary development from archaic H. sapiens to anatomically modern humans. Modern humans evolve in different continents and end up so physically and genetically similar due to gene flow between archaic populations, modern humans are not a separate species.

6. Complete Replacement Model Developed by British paleoanthropologists Christopher Stringer and Peter Andrews. Proposes anatomically modern populations arose in Africa in the last 200,000 years. They migrated from Africa, completely replacing populations in Europe and Asia. Does not account for the transition from archaic H. sapiens to modern H. sapiens anywhere except Africa.

7. CroMagnon Nickname: Cro-Magnon Man Site: Cro-Magnon, France Date of discovery: 1868 Discovered by: Louis Laret Age: About 30,000 years old Species: Homo sapiens

8. Anatomy Human body types vary Body size is determined by genes and is significantly influenced by diet and exercise Average height- 5 to 6 feet tall Average weight females- 120-140 lbs Average weight males- 168-183 lbs

9. Diet Homo sapiens are omnivorous, they consume a variety of both plant and animal material Varying with available food sources in regions of habitation, and also varying with cultural and religious norms, human groups have adopted a range of diets, from purely vegetarian to primarily carnivorous. 10,000 years ago we developed agriculture, which altered our diet

10. Resources http://en.wikipedia.org/wiki/Homo_sapiens