BIOLOGY 1M03 Chapter 13: Chapter 13- From Hominin to Homo.docx
Document Summary
Pleistocene epoch began 1. 8 mya and saw a cooling of world"s climate: divided pleistocene into three parts: lower, middle, and upper lower, 1. 8 mya. Upper sharp cooling of world"s climate sharply increased fluctuations in temperature and first appearance of immense continental glaciers that covered northern europe 900 kya: ended about 12 kya when a warm, interglacial phase of world climate began. Homo ergaster appeared in eurasia about the same time it was first known from mya. Africa: homo ergaster was the first hominin to make its way out of africa know this because there was a discovery of a lower jaw and. Oldowan tools in sediments dated to 1. 1 or 1. 8 mya in georgian (at archeological site dmnaisi) Also uncovered two nearly complete crania at dmnaisi that are very similar to african specimens of h. ergaster and dated around 1. 7 mya. H. ergaster migrated out of africa to eurasia about 1. 7 mya, taking their.