Table 1 in A new dentition-based phylogeny of Litopterna (Mammalia: Placentalia) and ' archaic' South American ungulates

Table 1. Summary of the main taxonomic proposals for early SANUs (‘condylarths’), Litopterna, and Notopterna. Abbreviations: SF, Superfamily; SO, Suborder
Ameghino (1889)Lydekker (1893)Ameghino (1904a)Ameghino (1906)Schlosser (1911)Scott (1913)UngulataOrder UngulataOrder CondylarthraOrder CondylarthraOrder UngulataOrder LitopternaPerissodactylaSO LitopternaFam. PhenacodontidaeFam. PantostylopidaeSO LitopternaFam. MacraucheniidaeOrder LitopternaFam. MacraucheniidaeFam. PeriptychidaeFam. PhenacodontidaeFam. BunolitopternidaeFam. ProterotheriidaeFam. MacraucheniidaeFam. ProterotheriidaeFam. PantolambdidaeFam. CatathleidaeFam. MacraucheniidaeFam. DidolodidaeFam. ProterotheriidaeFam. PantostylopidaeFam. PantolambdidaeFam. ProterotheriidaeFam. HomalodontotheriidaeOrder PerissodactylaFam. ArctocyonidaeFam. AdianthidaeFam. MacrauchenidaeOrder PerissodactylaSubfam. TheosodontinaeFam. HyracotheriidaeSubfam. MacraucheninaeFam. PalaeotheriidaeFam. AdiantidaeFam. MacraucheniidaeFam. ProterotheriidaeFam. ProterotheriidaeFam. HyracotheriidaeFam. AdiantidaeFam. LophiodontidaeSimpson (1945)Cifelli (1983a)McKenna and Bell (1997)Soria (1989a, 2001)Muizon and Cifelli (2000) Gelfo et al. (2016)Order CondylarthaOrder CondylarthraOrder CondylarthraOrder CondylarthraOrder Panameriungulata PanperissodactylaFam. DidolodontidaeSF DidolodontoideaFam. DidolodontidaeFam. DidolodontidaeFam. MioclaenidaeOrder PanameriungulataOrder LitopternaFam. DidolodontidaeOrder LitopternaOrder LitopternaSubfam. KollpaniinaeSubfam. KollpaniinaeFam. MacraucheniidaeFam. SparnotheriodontidaeFam. ProtolipternidaeSO EolitopternaFam. DidolodontidaeFam. Didolodontidae?aSubfam. MacraucheniinaeOrder LitopternaSF MacrauchenoideaFam. AnisolambdidaeSO LitopternaOrder LitopternaSubfam. AdianthinaeFam. ProtolipternidaeFam. MacraucheniidaeFam. Sparnotheriodontidae Fam. ProtolipternidaeFam. Didolodontidae? (=Fam. ProterotheriidaeSO LopholipternaSubfam. SparnotheriodontinaeSO LopholipternaFam. MacrauchenidaeProtolipternidae)aSubfam. PolymorphinaeSF MacrauchenoideaSubfam. PolymorphinaeFam. MacraucheniidaeFam. AdianthidaeFam. ProtolipternidaeSubfam. ProterotheriinaeFam. MacraucheniidaeSubfam. CramaucheniinaeSubfam. MacraucheniinaeFam. ProterotheriidaeFam. AnisolambdidaeSubfam. PolymorphinaeSubfam. MacraucheniinaeSubfam. CramaucheniinaeFam. NotonychopidaeFam. SparnotheriodontidaeSubfam. CramaucheniinaeFam. NotonychopidaeFam. ProterotheriidaeFam. MacraucheniidaeSubfam. MacraucheniinaeFam. AdianthidaeFam. AdianthidaeFam. ProterotheriidaeFam. AdianthidaeSubfam. IndaleciinaeOrder NotopternaFam. AdianthidaeSF ProterotherioideaSubfam. AdianthinaeFam. AmilnedwarsiidaeFam. NotonychopidaeFam. ProterotheriidaeSF ProterotherioideaFam. IndaleciidaeSubfam. AnisolambdinaeFam. ProterotheriidaeFam. NotonychopidaeSubfam. ProterotheriinaeSubfam. AnisolambdinaeSubfam. Proterotheriinae
aGelfo et al. (2016) argued that Protolipternidae may be a junior synonym of Didolodontidae,which in turn may be a form of bunodont litoptern.