Laetoli

Laetoli footprintsA trail of footprints, probably left by Australopithecus afarensis individuals some 3.5 million years ago, at Laetoli, northern Tanzania.

Laetoli, site of paleoanthropological excavations in northern Tanzania about 40 km (25 miles) from Olduvai Gorge, another major site.

Homo sapiens cranium fossils from Laetoli, Tanzania
Homo sapiens cranium fossils from Laetoli, TanzaniaThe LH 18 cranium, found in 1976 at Laetoli, Tanzania. Dated to approximately 120,000 years ago, it is considered to be representative of late archaic Homo sapiens.

Mary Leakey and coworkers discovered fossils of Australopithecus afarensis at Laetoli in 1978, not far from where a group of hominin (of human lineage) fossils had been unearthed in 1938. The fossils found at Laetoli date to a period between 3.76 and 3.46 million years ago (mya). They come from at least 23 individuals and take the form of teeth, jaws, and a fragmentary infant skeleton. In volcanic sediments dated to 3.56 mya are trails of remarkably humanlike footprints (presumably made by A. afarensis and possibly another hominin species) along with those of numerous animals. A. afarensis is best known from the Ethiopian site of Hadar, but the footprints at Laetoli are of monumental importance in the record of human evolution. Homo sapiens fossils have also been found at Laetoli, in strata dating to about 120,000 years ago.

The Editors of Encyclopaedia Britannica This article was most recently revised and updated by John P. Rafferty.
Citation Information
Article Title: Laetoli
Website Name: Encyclopaedia Britannica
Publisher: Encyclopaedia Britannica, Inc.
Date Published: 06 December 2021
URL: https://www.britannica.comhttps://www.britannica.com/place/Laetoli
Access Date: November 23, 2024