|It has been suggested that Castoroides ohioensis and Castoroides leiseyorum be merged into this article or section. (Discuss)|
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- Castoroides leiseyorum (found in Florida only)
- Castoroides ohioensis, synonym Castoroides nebrascensis (found throughout continental United States and Canada)
this beaver was the biggest ever with the length of 8ft(2.5m)it is much bigger than the modern beaver.
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