Laetoli , also spelled Laetolil , site of paleoanthropological excavations in northern Tanzania about 40 km 25 miles from Olduvai Gorge , another major site. Mary Leakey and coworkers discovered fossils of Australopithecus afarensis at Laetoli in , not far from where a group of hominin of human lineage fossils had been unearthed in The fossils found at Laetoli date to a period between 3. They come from at least 23 individuals and take the form of teeth, jaws, and a fragmentary infant skeleton. In volcanic sediments dated to 3.
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Laetoli - 3.5 Million Year Old Hominin Footprints in Tanzania
Laetoli - Wikipedia
Laetoli is a site in Tanzania , dated to the Plio-Pleistocene and famous for its hominin footprints , preserved in volcanic ash. The location and tracks were discovered by archaeologist Mary Leakey and her team in , and were excavated by Based on analysis of the footfall impressions "The Laetoli Footprints" provided convincing evidence for the theory of bipedalism in Pliocene hominins and received significant recognition by scientists and the public. Since , paleontological expeditions have continued under the leadership of Amandus Kwekason of the National Museum of Tanzania and Terry Harrison of New York University , leading to the recovery of more than a dozen new hominin finds,  as well as a comprehensive reconstruction of the paleoecology. Dated to 3.
Laetoli Footprint Trails
The Laetoli footprints were formed and preserved by a chance combination of events -- a volcanic eruption, a rainstorm, and another ashfall. When they were found in , these hominid tracks, at least 3. Paleoanthropologist and consultant forensic scientist Owen Lovejoy compares the ancient biped prints with those of modern humans and chimpanzees. All rights reserved. View in: QuickTime RealPlayer.
Slideshows Videos Audio. Here of some of the well-tested methods of dating used in the study of early humans: Potassium-argon dating , Argon-argon dating , Carbon or Radiocarbon , and Uranium series. All of these methods measure the amount of radioactive decay of chemical elements; the decay occurs in a consistent manner, like a clock, over long periods of time. Thermo-luminescence , Optically stimulated luminescence , and Electron spin resonance.