Trigonias
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Extinct (fossil)
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Trigonias is an extinct genus of rhinoceros.
It is the oldest rhino of which a well-preserved skeleton has been found. Trigonias was about 2.5 m (8 ft 2 in) long and, despite lacking horns, looked a lot like modern rhinos. Its front legs had five toes (as contrasted with three in modern rhinos), the fifth of which was vestigal.
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