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The Laetoli Footprints-3.6myo. Discovered by Mary Leakey & Paul Abell in fossilized volcanic ash in Laetoli, Tanzania. The footprint trail indicates bipedal apes most likely belonging to the species Australopithecus afarensis (Lucy's species).

The Laetoli Discovered by Mary Leakey & Paul Abell in fossilized volcanic ash in Laetoli, Tanzania. The footprint trail indicates bipedal apes most likely belonging to the species Australopithecus afarensis (Lucy's species).