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Livyatan

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Livyatan melvillei is an extinct species of physeteroid whale, similar in size to the modern sperm whale. It lived during the Serravallian stage of the Miocene epoch, about 12 to 13 million years ago (Mya). Livyatan melvillei was 13.5 to 17.5 m (44 to 57 ft) long, about the same as a modern adult male sperm whale. The skull of L. melvillei is 3 m (9.8 ft) long. Unlike the modern sperm whale, L. melvillei had functional teeth in both of its jaws, which were robust and its temporal fossa was also considerably larger than in the modern-age sperm whale. L. melvillei is one of the largest predators yet known, with whale experts using the phrase "the biggest tetrapod bite ever found" to explain their find.

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