Dinotherium dīnəthēr´ēəm [key] [Gr.,=terrible beast], extinct mammal related to the elephant, fossil remains of which have been found in Miocene and Pliocene formations of Africa, Europe, and India. It had a short proboscis and a pair of tusks which extended downward, curving backward, from the lower jaw. The name is also spelled Deinotherium. It is classified in the phylum Chordata , subphylum Vertebrata, class Mammalia.

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