Several expansions of populations of archaic humans out of Africa and throughout Eurasia took place in the course of the Lower Paleolithic, and into the beginning Middle Paleolithic, between about 2.1 million and 0.2 million years ago . These expansions are collectively dubbed as Out of Africa I, in contrast to the expansion of Homo sapiens into Eurasia, which may have begun shortly after 0.2 million years ago .The earliest presence of Homo outside of Africa, dates to close to 2 million years ago. A 2018 study claims human presence at Shangchen, central China, as early as 2.12 Ma based on magnetostratigraphic dating of the lowest layer containing stone artefacts. The oldest known human skeletal remains outside of Africa are from Dmanisi, Georgia , and are dated to 1.8 Ma. These remains are classified as Homo erectus georgicus. Later waves of expansion are proposed around 1.4 Ma , associated with Homo antecessor and 0.8 Ma (cleaver-producing Acheulean groups, associated with Homo heidelbergensis.Until the early 1980s, early humans were thought to have been restricted to the African continent in the Early Pleistocene, or until about 0.8 Ma; Hominin migrations outside East Africa were apparently rare in the Early Pleistocene, leaving a fragmentary record of events.
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