which corresponds to a new species of fern that lived 300 million years ago. The new species has been named Acitheca machadoi, according to SIC Notícias. This find contributes to the ...
now provide evidence that human ancestors of the genus Australopithecus that lived in southern Africa between 3.7 and 3.3 million years ago subsisted mostly on plants. "Tooth enamel is the hardest ...
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