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A 1.4 million -year -old jaws have now been identified in the South Africa cave in 1949 as a kind of previously unknown human relativity called “Nutcracker”.
The researchers believed since the 1960s that the fossil jaw, which was discovered on the archaeological Swartkrans website, belongs to an early human type called Homo Ergster.
However, new X -ray tests for the jaw and other excavations on the site have helped to create virtual 3D models that provide a better understanding of the internal and external structures of extinct species.
New results, detailed in a study published in magazine Human developmentDid the researchers lead to the conclusion that the jaw does not belong to it in reality H Ergaster.
It comes from a new kind of sex With the madness of greatness, The nickname “Nutcracker” is due to the massive size of the fossil and the huge incleasant teeth.
The researchers specifically evaluated the fossil layer – the solid and dense bone tissue that forms the largest part of the tooth below the enamel – then compare it with those in other human relatives.
They found that the features of the fossil teeth differ from the previously discovered samples of sex known as P ishiopicusand P Boisei and P Robustus.
“In general, the results show that SK 15 is unambiguously out of contrast H Ergaster And it is more compatible with Morphology Great madness, ” The researchers wrote in the study.
They classified the fossil as belonging to new types that you call P capensis.
“We are prior to SK 15 to Paranthropus CapensisMore wounds than paranoia Another three -handed species of this sex. “
The newly discovered species are “probably” divided into “most likely” P Robustus More than 2 million years ago.
This means at least two paranoia Class – P Robustus and P capensis – Perhaps I lived in the South Africa region 1.4 million years ago, it is possible that different environmental outlets will live with different meals.
The researchers called for more test for sex -reserved samples paranoia To search for P capensis The excavations are mixed with them. “The existence of the other P. capensis Mixed samples between the current hypododigm from P Robustus It should be more tested, especially by reviewing Swartkrans.