†unranked clade Pachyrukhinae Kraglievich 1934
Mammalia - Notoungulata - Hegetotheriidae
Parent taxon: Hegetotheriidae according to F. D. Seoane et al. 2023
See also Cerdeno and Bond 1998, Croft and Anaya 2006, Seoane et al. 2019, Seoane et al. 2017 and Vera and Ercoli 2018
Sister taxa: Getohetherium, Hegetotheriinae, Hegetotheriopsis, Paedsotherium, Propachyrucos aequilatus, Propachyrucos crassus, Propachyrucos robustus, Pseudohegetotherium, Selatherium
Subtaxa: Medistylus Pachyrukhini Propachyrucos Prosotherium
Distribution: