Phylum Lobopodia Snodgrass, 1938 - lobopodians
   Subphylum Onychophora Grube, 1853 see Phylum Onychophora Grube, 1853
     Class Udeonychophora Poinar, 2000 [monotypic]
       Order †Ontonychophora Poinar, 2000
         Superfamily †Tertiapatoidea Poinar, 2000
           Family †Tertiapatidae Poinar, 2000 [monotypic]
             Genus †Tertiapatusᵀ Poinar, 2000 [monotypic]
               1 †Tertiapatus dominicanusᵀ Poinar, 2000