Further evidence found against ancient ‘killer walrus’ theory

A team of scientists using techniques from the field of dentistry is shedding new light on the evolution of walruses, fur seals and sea lions. The researchers have cast further doubt on previous claims that an ancient ‘killer walrus’ was a marine mammal eater. The multidisciplinary research team analyzed the internal structure of tooth enamel in a fossil walrus from California, Pelagiarctos thomasi, and in teeth of New Zealand fur seals and sea lions.
Paleontology News — ScienceDaily

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