†subfamily Nematheriinae Mercerat 1891 (edentate)
Parent taxon: Mylodontidae according to A. G. Kramarz et al. 2010
Sister taxa: Chubutherium, Lestodontinae, Lestodontini, Magdalenabradys, Mirandabradys zabasi, Mylodontinae, Nematherium, Orophodon, Orophodontinae, Paraglossotherium, Pseudoprepotherium, Scelidotheridium, Scelidotheriinae, Urumacotheriinae
Subtaxa: none
Ecology: ground dwelling herbivore
Distribution: found only at Segundas Barrancas Blancas (SBB) - from Estancia Cordon Alto to Ea el Tordillo (Miocene of Argentina)