Tooth of Giant 220-million-year-old Reptile Proves Predators Fought Across Land and Sea

Tooth of Giant 220-million-year-old Reptile Proves Predators Fought Across Land and Sea

The tooth of a 220-million-year-old semi-aquatic phytosaur has been found embedded in the thigh bone of a terrestrial rauisuchid. Both are giant prehistoric reptiles distantly related to the modern crocodile.

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