A new study published this week in the journal Proceedings of the National Academy of Sciences documents dietary shifts in herbivores that lived between 1-3 million years ago in Ethiopia’s Lower Omo Valley. The research team, led by Enquye Negash, a postdoctoral researcher in the George Washington University Center for the Advanced Study of Human Paleobiology, examined stable isotopes in the fossilized teeth of herbivores such as…

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Source: archeo