ANTH 2 Lecture Notes - Lecture 7: Behavioral Modernity, Homo Erectus, Neanderthal
29 Aug 2020
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What is the pulsed climate variability hypothesis: brain size, looking for evidence of lakes. What was the article"s main point regarding human evolution? (pulsed speciation and dispersal as related to climate?) Significant hominin brain expansion occurred at 1. 8 mya (with occurrence of massive ephemeral deep-water lakes) . Subsequent brain expansions are associated with extreme dry periods. Anatomically modern humans (amh)= look like us (appear about 200 thousand years ago in africa) Archaic humans= neandertals, deisovans, homo heidelbergensis and other homo species. Multi-regional hypothesis: suggests that we evolved in place and became one species because we interbred with other species, modern humans originated from local populations of homo erectus around the world, at about the same time. Recent african origins hypothesis (out of africa): modern humans derive from single population or archaic homo sapiens who migrated out of africa and replaced all other forms of hominins/homo (also called the replacement theory )
