Tooth Evaluation Affords Clues to Timing of Hominin Diversifications

Paranthropus aethiopicus boisei Casts

Paranthropus aethiopicus boisei CastsWASHINGTON, D.C.—In response to an announcement launched by George Washington College, scientist Enquye Negash analyzed the chemical composition of the tooth of herbivores similar to antelopes and pigs that lived between one and three million years in the past in Ethiopia’s Decrease Omo Valley. The outcomes of the research counsel that the animals shifted from consuming woody vegetation to grasses and sedges at 2.7 million years in the past, and at two million years in the past, because the setting shifted to open savannah. Negash and his colleague Jonathan Wynn of the Nationwide Science Basis then examined the chemical composition of the tooth enamel of Paranthropus boisei, an early hominin. The researchers concluded that P. boisei additionally shifted to consuming grasses and sedges some 2.37 million years in the past, earlier than the creature’s cranium and jaw had tailored to the brand new meals. All the herbivores had responded to the ecological modifications of their environments in an interconnected method, Wynn defined. For extra on the weight-reduction plan of early hominins, go to “Proteins Remedy a Hominin Puzzle.”

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