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Andrias matthewi

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Andrias matthewi, or Matthew's giant salamander, is an extinct species of giant salamander from the Miocene of North America. It belongs to the genus Andrias, which contains the living Asian giant salamanders. It is the largest salamander known to have ever existed, with a maximum estimated length of 2.3 m (7 ft 7 in). Its fossils have been found in Nebraska, Colorado, and Saskatchewan.