|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Rodentia - Cricetidae
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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.
|Merriam 1889||Brain case subquadrate, with prominent supraorbital ridges bordering a median frontal sulcus; postorbital process of squamosal peglike; interparietal large; zygomatic arches lowest opposite first molar, and expanded vertically into a broad lamina; shelf of palate broadly emarginate posteriorly, without the "step" of Arvicola; ascending ramus of mandible long and slender, slightly higher than coronoid process; root of lower incisor ending at level of alveola of last molar, molars rooted, each having two true divergent roots; crowns large, crowded, with broadly rounded prisms; pattern of upper molar series and arrangement of prisms as in Arvicola (section Pedomys); anterior face of second and third upper molars concave, the anterior loop pyriform, bulging on the inner side, lower molars with line of infolding of enamel near the outer side, last lower molars with line of infolding of enamel near the outer side; last lower molar very large, as broad or nearly as broad anteriorly as posteriorly, and consisting of three elongated transverse loops joined along the outer side of the tooth, without any distinct external loop or triangle.|
|L. D. Martin 1975 (Propliophenacomys)||Medium size microtine with palate and palatal grooves shallow; molars rooted and lacking cement; lingual reentrant angles turned posteriorly and alternating triangles closed.|
|C. A. Repenning et al. 1987||A species of Phenacomys with only two accessory triangles in the anteroconid complex of the first lower molar, the lingual one broadly confluent with the highly variable anteroconid cap and the buccal one preserving a Momomys Kante on the occlusal pattern in all but the least worn specimens (fig. 6); dentine tracts very short. Anteroposterior length of the first lower molars between 2.5 and 2.8mm.|