<==o PERISSODACTYLA Owen, 1848 [Mesaxonia] (kavioeläimet) |-- †BRONTOTHEROIDEA [Titanotheriomorpha Hooker, 1989] |-- HIPPOMORPHA (hevosmaiset kavioeläimet) `--o MEROPOMORPHA [Tapiromorpha] (tapiirimaiset kavioeläimet) |--o †ISECTOLOPHOMORPHA Peterson, 1915 sensu Prothero & Schoch, 1989 | `-- †Isectolophidae Peterson, 1915 [1919 (Schoch, 1989)] [paraphyletic assemblage of basal meropomorphs] `--o RHINOTAPIROMORPHA Prothero & Schoch, 1989 (sarvikuono-tapiirimaiset kavioeläimet) |-- †Kalakotia simplicidentata Ranga Rao, 1972 [Aulaxolophus quadrangularis, Chasmotherium mckennai, Schlosseria radinskyi] |--o †ANKYLOPODA Cope, 1889 sensu Prothero & Schoch, 1989 | |-- †Lophiodontidae Gill, 1872 [Lophiodontoidea Gill, 1872] | `-- †CHALICOTHEROIDEA `--o CERATOMORPHA (sarvikuonomaiset kavioeläimet) |-- †Breviodon Radinsky, 1965 |-- †Parabreviodon Reshetov, 1975 `--+-- †Deperetellidae Radinsky, 1965 sensu Hooker, 1989 [Deperetellidea Radinsky, 1965 sensu Prothero & Schoch, 1989] |-- †Lophialetidae Matthew & Granger, 1925b sensu Radinsky, 1965b [Lophialetidea Matthew & Granger, 1925b sensu Prothero & Schoch, 1989] `--o TAPIRIDEA sensu Prothero & Schoch, 1989 |-- RHINOCEROTOIDEA (sarvikuononsukuiset kavioeläimet) `--+-- †Heptodon calciculus Cope, 1882 [Lophiodon ventorum Cope, 1880] `-- TAPIROIDEA Burnett, 1830 sensu Prothero & Schoch, 1989 (tapiirinsukuiset kavioeläimet)
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