According to its discoverers, A. sediba's odd blend of primitive and modern traits make it an intriguing candidate for the immediate ancestor of Homo. "It's the ultimate look at a species in transition," says paleoanthropologist Lee Berger. "And it's transitioning toward humans."
SOURCES: LEE R. BERGER, UNIVERSITY OF THE WITWATERSRAND; DARRYL DE RUITER, TEXAS A&M UNIVERSITY
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