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Reconstruction of the appearance of a Jurassic turtle from Krzyżanowice, by Bogusław Waksmundzki

Fossil turtle Shells from Jurassic Poland record ancient ecological interactions, study finds

Scientists at the University of Warsaw have analysed unusual cavities preserved on the shells of sea turtles that lived 150 million years ago, concluding that the marks record ancient interactions with parasites, symbionts and predators.