†Leptauchenia Leidy 1856 (oreodont)
Mammalia - Artiodactyla - Merycoidodontidae
Synonyms: Brachymeryx Cope 1877, Cyclopidius Cope 1877, Hadroleptauchenia Schultz and Falkenbach 1968, Pithecistes Cope 1877, Pseudocyclopidius Schultz and Falkenbach 1968
Parent taxon: Merycoidodontidae according to B. Lander 1998
Sister taxa: Aclistomycter, Bathygenys, Brachycrus, Desmatochoerus, Eporeodon, Hypsiops, Limnenetes, Mediochoerus, Merychyinae, Merycochoerus, Merycoides, Merycoidodon, Mesoreodon, Miniochoerus, Oreodontoides, Oreonetes, Paroreodon, Phenacocoelinae, Phenacocoelus, Sespia, Ticholeptus
Subtaxa: Leptauchenia decora, Leptauchenia eiselyi, Leptauchenia major, Leptauchenia orellaensis
Type: Leptauchenia decora
Ecology: ground dwelling herbivore