Anth-202-fal-10-L08-Hominoids etc

Anth-202-fal-10-L08-Hominoids etc - Anthropology 202(500):...

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Anthropology 202(500): Introduction to Archaeology (Lecture # 8, September 28, 2010) Hominoids and Hominids: Early Human Origins and Our Niche on Earth Earliest fossil records for distant primate, including humans, ancestors; as reported by today’s paleoanthropologists and paleontologists A. Purgatorius : late Cretaceous period, 90-65 million years ago (Myr or m.y.a.), small shrewlike animal that subsisted on insects found in Montana, USA B. A egyptopithecus, Oligocene (ca. 35-23 Myr), from Fayum Depression in Egypt, possible ancestor of the hominoid lineage, which includes humans, great apes, and gibbons II. An ecological context for hominoids of Miocene epoch: ca. 23.5 to 5.2 million yrs ago (late Cenozoic era, age of mammals) Dramatic landscape changes: configuration of continents, mountains, Antarctic ice Pulse-like climatic shifts: 17 to 14 and 8 to 5 million years ago From warmer, less seasonal, more forested regimens: limited savanna habitat to colder, more seasonal, less forested regimens: more savanna habitat Changing environments in the face of on-going biological evolution leads to evolutionary radiation; not just people ancestors, but herbivores too! III.
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This note was uploaded on 02/28/2011 for the course ANTH 202 taught by Professor Staff during the Fall '08 term at Texas A&M.

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Anth-202-fal-10-L08-Hominoids etc - Anthropology 202(500):...

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