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15 animals that are living fossils

By: Bryan Nelson on Aug. 16, 2010, 12:25 p.m.
Pig-nosed turtle in an aquarium

Photo: pitcharee/Shutterstock

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Pig-nosed turtle

As the only living member of the family Carettochelyidae, the pig-nosed turtle is one of a kind — and not just because of its distinctive snout. Unlike most freshwater turtles, these guys have flippers which more closely resemble those of marine turtles, making them almost entirely aquatic.