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Ancient human ancestor Lucy was not alone — she lived alongside at least 4 other proto-human species, emerging research suggestsIn fact, as many as four other kinds of proto-humans roamed the continent during ... that lived in this region during the middle Pliocene epoch (3 million to 4 million years ago).
THE question of defining the Pliocene - Pleistocene boundary has become important in recent years, because the practices of different geologists have varied to such an extent that deposits ...
The Pliocene epoch, which lasted from 5.3 million to 2.6 million years ago, was a consequential time in Earth's history. The Isthmus of Panama formed, connecting North and South America ...
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