The diet of our most remote ancestors, the hominins, was richer and more varied than previously thought, according to an article published in the journal PLOS ONE signed by a team from the Biological Zoology and Anthropology Unit of the Department of Biology Evolutionary, Ecology and Environmental Sciences of the University of Barcelona, ​​under the direction of Professor Alejandro Pérez Pérez. The new work reveals that, after the process of separation of the chimpanzee lineage, some six million years ago, our most direct ancestors specialized differentially to exploit food resources in very diverse environments. Surviving East Africa during the Middle Pleistocene Food is one of the most important differentiating factors in primates. The process to obtain resources and process food, which varies between different lineages, is decisive in the main

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anatomical adaptations of the skeleton and teeth. Therefore, characterizing the diet and ecological adaptations of the East African Pleistocene hominids is essential to Egypt Email List understanding the habitats where the ancestors of the human species evolved. The new work analyzes the variability of dental microstriation patterns in primates, and outlines new scenarios in the feeding of East African hominins. In addition, it opens unknowns about ideas traditionally accepted by the scientific community, such as the supposedly frugivorous diet of the oldest hominins ( A. anamensis ) or the hypothetical hard diet of the parantropines P. aethiopicus and P. boisei. According to the authors, Australopithecus anamensis, dated at about four million years ago, shows a striae pattern in tooth enamel similar to that of cercopithecoid primates, such as baboons and baboons, which feed on grains

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seeds in arid environments of the open savanna. A softer diet for Australopithecus afarensis The new study confirms the controversial hypothesis that about three million years ago the Australopithecus afarensis species – descended from A. anamensis and with a microstriation pattern more similar to that of chimpanzees and gorillas – had a softer diet, based mainly on the consumption of ripe fruits and plants from more closed forests. “This result is very surprising, since it indicates that the oldest species would have had a more specialized diet than the most recent, when the most expected would be the opposite”, explains Professor Alejandro Pérez Pérez. “The findings also indicate that the species Paranthropus aethiopicus and Paranthropus boisei – robust forms of australopithecines, between one and two million years old and with very large and robust teeth –

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