|It has been suggested that Castoroides ohioensis and Castoroides leiseyorum be merged into this article or section. (Discuss) Proposed since April 2010.|
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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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