ANTHROP 2200 Lecture 10: 10. Pre-Australopithecines
29 Apr 2017
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Document Summary
Some people say hominid and others say hominin due to the transition from gradistic to cladistic. Before carrying on with human ancestors, here"s some terminology. The majority of human evolution fossils come from east or south africa. Particularly the area of the great rift valley in east africa. Because of plate tectonics, old geological beds are exposed and come to the surface. In the same region, volcanic sediment used to be common in the area, perfect for making fossils. Remember that when organic remains are rapidly buried in an oxygen-free environment with time and pressure, it becomes a fossil. Oxygen free environments include rock, tar, ice, amber, and bogs! Two types: b. c. i. ii. i. ii. Body fossils: fossils that reveal the body structure of organisms. Trace fossils: reveals the behavior of an organism. These would be things like footprints or tools. Before the early 20th century, most paleoanthropology was focused on comparisons with non-human primates.
