Deinotherium

Deinotherium ("terrible beast" derived from the Ancient Greek δεινός, 'deinos' meaning "terrible" and θηρίον, 'therion' meaning "beast") was a large prehistoric relative of modern-day elephants that appeared in the Middle Miocene and survived until the Early Pleistocene. During that time it changed very little. In life, it probably resembled modern elephants, except it had downward curving tusks attached to the lower jaw.