|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Rodentia - Cricetidae
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.
|J. W. Gidley 1922||Size very small, lenght of the cheektooth series 2.6 millimeters; cheek-tooth cusps depressed, with well-marked cingula at the entrance of the external valley, and with tendency to inclose te internal ones bij an uprising of the inner enamel wall between the cusps; posterior lobe of the first cheek tooth, relatively naarow but two-cusped at the summit; posterior lobe of the last cheek tooth small almost as much reduced as in Onychomys.|