Giant BeaverCastoroides ohioensis
It was one of the largest rodents to have ever lived! An extinct genus of Giant Beaver and about the size of a modern Black Bear, it was 6-8 ft. (2.5M) in length, about 3.3 ft. (1M) in height, and weighing in at 450-500 lbs. (218 kg).
It was very similar to modern beavers except that it was much larger with a much narrower tail and shorter back legs. Its front incisors were about 6 inches in length with ridges.
It lived from 1.5 Million Years ago and went extinct about 10 Thousand years ago. Found only in North America, it ranged widely in Florida.
Another rarer and Large Prehistoric Beaver, in Florida, is Castoroides leiseyorum. It was named after the famous Leisey Shell Pit deposit in Florida, in which it was discovered.
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