Chapter 9 - Ant2511 Chap 09 Fall 09 The First Dispersal of...

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Ant2511 Chap 09 Fall 09 The First Dispersal of the Genus Homo Homo erectus and Contemporaries WHO WERE THE EARLIEST AFRICAN EMIGRANTS? Assumptions 0. 1) New “grade” hominid appears in Africa (after 2 m.y.a) 1. 2) Immediate descendents migrated to Europe and Asia Why This Conclusion? 0. Geography - Africa was where all earlier hominids appeared 1. Anatomy –bigger, brainier hominids capable of traveling long distances 2. Behavior - advanced tool kit Reasonable Hypothesis 3. 1) Homo erectus/ergaster first evolved in Africa about 2 m.y.a. 4. 2) Emigrated to other areas of Old World 5. Now Some difficulties with this view Challenges to Hypothesis 6. Well-established date of 1.8 m.y.a. for Homo eretus/ergaster in East Africa 7. 1) Similar hominids appear about same time in Indonesia (Java) 8. 2) and soon afterwards in eastern Europe (Dmanisi site) 9. Is it still possible that hominids could have migrated from east Africa that quickly? The Dmanisi Hominids 10. Earliest Hominid found outside of Africa 11. Problem for Homo erectus migration hypothesis 12. 1) Early date 13. 2) Physical appearance 1
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Dmanisi 14. Easternmost Europe 15. Republic of Georgia 16. New discovered fossils dated radiometrically to 1.75 m.y.a. Dmanisi Skulls 17. Skull similar to East Africa Homo erectus but different 18. Less robust brow ridge 19. And smaller cranial capacity 20. Looks like the smaller “early Homo” specimens from East Africa Stone Tools 21. Stone tools not as advanced as “Acheulian” Questions Dmanisi Questions 22. Dmanisi discoveries raises questions 23. Was Homo erectus the first hominid to leave Africa 24. Or was it an earlier form of Homo? Possibilities Suggested by Dmanisi 25. Likely that first hominids to migrate out of Africa were form of early Homo (similar to smaller Homo habilis) 26. Or a very early primitive form of Homo erectus 27. Also possible that there was a second later migration out of Africa HISTORIC OVERVIEW OF HOMO ERECTUS DISCOVERIES 28. Overview of Homo erectus finds in the order in which they were discovered 29. 1) Java 30. 2) China 31. 3) Africa 2
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Discoveries in Java Indonesia 32. Indonesia 33. Area includes: 34. Borneo, Sumatra, Java, New Guinea (part) 35. Flores is island east of island of Java 36. In Pacific north of Australia Dubois and Java find Pithecanthropus Erectus 37. Searching for fossils along Solo river near town of Trinil
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This note was uploaded on 08/16/2011 for the course ANT 2511 taught by Professor Sinelli during the Spring '08 term at University of Central Florida.

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Chapter 9 - Ant2511 Chap 09 Fall 09 The First Dispersal of...

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