The Mesotheriidae represent one of several clades of the endemic South American ungulate Order †Notoungulata. This clade has some rodent-like adaptations such as hypertrophied upper and lower incisors, highly hypsodont ...

Dental homologies and evolutionary transformations within caviomorph rodents have long been disputed. Here, we participate in these debates in providing new insights from the dental morphology of Paleogene caviomorphs from ...