[스크랩] 3600만년전 인류의 발자취 족적화석
Hominid footprints Trail of hominid footprints fossilized in volcanic ash. This 70 metre trail was found by Mary Leakey's expedition at Laetoli, Tanzania in 1978. It dates from 3.6 million years and shows that hominids had acquired the upright, bipedal, free- striding gait of modern man by this date. The trail probably belongs to Australopithecus afarensis and dates from 3.7 t..