†family Ortotheridae Ameghino 1889 (edentate)
Mammalia - Theriamorpha - Ortotheridae
Full reference: F. Ameghino. 1889. Contribución al conocimiento de los mamíferos fósiles de la República Argentina [Contribution to the knowledge of the fossil mammals of the Argentine Republic]. Actas de la Academia Nacional de Ciencias de la República Argentina en Córdoba 6:xxxii-1027
Parent taxon: Gravigrada according to F. Ameghino 1891
See also Ameghino 1894
Sister taxa: Megalonychoidea, Pseudoglyptodon, Orophodontidae, Elipsodon
Subtaxa: Amarorhynchus Parhapalops
Ecology: ground dwelling herbivore
Distribution: there are no occurrences of Ortotheridae in the database