|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Rodentia - Castoridae
It was synonymized subjectively with Castor by Cope (1881); it was synonymized subjectively with Steneofiber by Hay (1902).
It was assigned to Castoridae by Leidy (1869) and McKenna and Bell (1997); and to Palaeocastorinae by Rybczynski (2007) and Korth (2014).
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.