Written by Bella Dalima
02 Apr, 2015 | 3:48 pm
Scientists have said a sophisticated new dating technique shows that Little Foot, an important fossil of an early human forerunner unearthed in the 1990s in South Africa, is roughly 3.7 million years old.
“The age of Little Foot has been highly debated,” said geologist Darryl Granger of Purdue University in Indiana, whose research appears in the journal Nature.
The study found Little Foot, a member of the species Australopithecus prometheus, lived at roughly the same time as Australopithecus afarensis, the species whose most famous fossil, known as Lucy, comes from Ethiopia.
Both species blended ape-like and human-like traits but with different features.
The researchers analysed 11 rock samples from around the nearly complete Little Foot fossil skeleton from the Sterkfontein Caves to gauge its age.
The findings may have important implications about the evolutionary relationships among humankind’s ancient relatives.
Our species, Homo sapiens, appeared roughly 200,000 years ago. Earlier members of the human genus, Homo, date back more than 2 million years. Our genus was predated by other species on the human family tree including various representatives of the genus Australopithecus.
Members of Lucy’s species were contemporaries of Little Foot, although Lucy herself lived about 500,000 years later.
Like Lucy, Little Foot was female. The species was much bigger and taller than Lucy’s, with gorilla-like facial features but fully upright and very strong with powerful hands for climbing, according to paleoanthropologists Ron Clarke and Kathy Kuman of the University of the Witwatersrand in Johannesburg.
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