In New "Game-Changer", Scientists Extract 24-Million-Year-Old Protein Fragments From Extinct Rhino ToothScientists have got their hands on the oldest animal proteins yet, extracted from 18-million-year-old fossilized mammal teeth in East Africa, pushing the record back by an astonishing 14 to 15 million years. Even older partial fragments of proteins were obtained in North America from a rhino...
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