A History of Human Ancestors. What theories make up what we know about our earliest ancestors? What are the characteristics of our different homo ancestors?
Stringer and Brauer propose in their "Out of Africa" hypothesis that Homo ergaster, H. heidelbergensis, and H. sapiens emerged from Africa. According to their model, H. ergaster branched out and led to the rise of H. erectus in Asia; whereas H. heidelbergensis spread more of its species to Europe and possibly Asia. Homo sapiens were thought to have emerged right out of Africa, and then spread worldwide.
The recent discovery of the H. antecessor fossils …
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…smooth vertical forehead with no constriction at orbits, specialized vocal tracts, rounded occipital regions, small anterior teeth, gracile and fairly vertical faces, a chin, gracile limb bones, and a more anteriorly positioned hip bone.
People first began to disperse to Australia 50 or 60 thousand years ago, as derived from the Lake Mungo Man. People made it to the Americas by way of Berengia before 12,500 years ago, as told by the ancient site in Monte Verde, Chile.
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