|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Rodentia - Castoridae
It was recombined as Monosaulax hesperus by Stirton (1935) and Black (1961); it was recombined as Neatocastor hesperus by Korth (1996), Hayes (2000) and Tabrum and Nichols (2001).
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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.