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New stratigraphic research makes Little Foot the oldest complete Australopithecus
Date:3/14/2014

After 13 years of meticulous excavation of the nearly complete skeleton of the Australopithecus fossil named Little Foot, South African and French scientists have now convincingly shown that it is probably around 3 million years old.

In a paper published today, Friday, 14 March 2014 at 12:00 (SATS), in the scientific journal, the Journal of Human Evolution, the latest findings by Professor Ron Clarke from the University of the Witwatersrand and his colleagues refute previous dating claims that suggested Little Foot is younger. (See the all authors' details and affiliations at the end of the release.)

The paper is titled: Stratigraphic analysis of the Sterkfontein StW 573 Australopithecus skeleton and implications for its age, and is the result of a detailed study of the stratigraphy, micro-stratigraphy, and geochemistry around the skeleton.

LITTLE FOOT'S STORY:

The Sterkfontein caves of Gauteng, South Africa have been world famous since 1936 for producing large numbers of fossils of the ape-man Australopithecus. However, for sixty years, these fossils consisted only of partial skulls and jaws, isolated teeth and fragments of limb bones. These were obtained by blasting or drilling and breaking of the calcified ancient cave infill or by pick and shovel excavation of the softer decalcified infills.

Questions arose about the age of these fossils, of how they came to be in the caves, and also of how a complete skeleton would appear. Then in 1997 Ron Clarke, Stephen Motsumi and Nkwane Molefe of the University of the Witwatersrand discovered an almost complete Australopithecus skeleton with skull embedded in hard, calcified sediment in an underground chamber of the caves. They began to carefully excavate this skeleton in order to expose it in place in the cave and to understand the ancient processes that contributed to its burial and preservation.

This was the first time
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Contact: Erna van Wyk
erna.vanwyk@wits.ac.za
27-117-174-023
University of the Witwatersrand
Source:Eurekalert

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