†subfamily Periptychinae Osborn and Earle 1895 (condylarth)
Mammalia - Tribosphenida - Periptychidae
Parent taxon: Periptychidae according to T. J. D. Halliday et al. 2017
See also Archibald 1998 and Hay 1902
Sister taxa: Alticonus, Ampliconus, Anisonchinae, Anisonchus, Auraria, Beornus, Conacodon, Conacodontinae, Escatepos, Goleroconus, Hemithlaeus, Miniconus, Mithrandir, Oxyacodon, Paleoungulatum, Tinuviel
Subtaxa: Ectoconus Periptychus
Type: Periptychus
Ecology: ground dwelling herbivore
Distribution: