National Geographic : 1996 Jan
PHOTOGRAPHEDATCROATIANNATURALHISTORYMUSEUM Distant cousins or siblings? Weighing the question of kinship, Croatian researcher Jakov Radovcic compares two Neandertal chins one ancient and receding (above, foreground) and another more recent and jutting. To some, such sub tleties suggest that Neandertals and modern humans interbred and were thus one species. "They were like us," one expert says. "They were just ancient hillbillies." Others disagree, citing strong differences in specimens from Israel, where Neandertals (below, at left) and moderns overlapped for millennia.