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The first member of the genus Homo to be hairless was Homo erectus, originating about 1.6 million years ago. [6] The dissipation of body heat remains the most widely accepted evolutionary explanation for the loss of body hair in early members of the genus Homo, the surviving member of which is modern humans.
The extant Homo heidelbergensis (cladistically granting Homo sapiens), which was originally African, emerged within the Asian Homo erectus. Contemporary groups appear to have been interbreeding, so any phylogeny like this only gives a coarse impression of the evolution of Homo , and extinct lineage may have partially continued in other groupings.
Homo erectus derives from early Homo or late Australopithecus. Homo habilis , although significantly different of anatomy and physiology, is thought to be the ancestor of Homo ergaster , or African Homo erectus ; but it is also known to have coexisted with H. erectus for almost half a million years (until about 1.5 Ma).
The Dmanisi skull, also known as Skull 5 or D4500, is one of five skulls discovered in Dmanisi, Georgia and classified as early Homo erectus.Described in a publication in October 2013, it is estimated to be about 1.8 million years old and is the most complete skull of a Pleistocene Homo species, [1] [2] and the first complete adult hominin skull of that degree of antiquity.
Homo erectus was the first ancient human to migrate out of Africa about 1.9 million years ago. ... But some experts side with the theory that Egyptians used ramps and haulage devices to put the ...
These sites attest that early Homo erectus have crossed the North African tracts, which are usually hot and dry. [4]: 2 There is little time between Homo erectus' apparent arrival in South Caucasus around 1.8 Ma, and its probable arrival in East and Southeast Asia.
The researchers believe Homo erectus became isolated on the island around 1 million years ago and underwent a dramatic reduction in body size during a period of around 300,000 years.
Half a million years ago, Homo erectus first migrated out from Africa to Europe and Asia. They settled becoming Neanderthals in Europe. 200,000 years ago, there was a second migration from Africa, this time by Homo sapiens , the encroached upon the pre-existing species with superior weapons, better organization and more numbers and eventually ...