Anthropology: Pygmy Progenitor?

Among fellow anthropologists, Britain's L.S.B. Leakey is revered—with reservations. Since 1931 he has been excavating the Olduvai Gorge in Tanganyika, which is perhaps the richest known deposit of human and prehuman fossils. The site of Leakey's excavations was once a small lake that gradually filled and dried up, preserving in stone the bones of many creatures, some of them primates, that lived on its shores. Much later, a river cut a canyon through the lake bed, bringing the bones to light.

Out of this treasure chest came bones of a lowbrowed creature that...

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