|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Mammalia - Rodentia - Echimyidae
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.
|R. Sostillo et al. 2014||Dp4 trilophodont with small mesolophid (or metalophulid II?) spur. Lower molars with mesoflexid more ephemeral than that of R. plesiodon. Mesoflexid trans- formed into mesofossettid in m1 and replaced by mesofosset- tid in m2 during early ontogenetic stages. Mesofossettid of m1 absent when metaflexid begins to close.|