Phylum Lobopodia Snodgrass, 1938 - lobopodians
   Subphylum Onychophora Grube, 1853 see Phylum Onychophora Grube, 1853
     Class †Xenusia Dzik & Krumbiegel, 1989 - xenusians
       Order †Scheronychophora Poinar, 2000, orth. inval. see Order Scleronychophora Hou & Bergström, 1995
         1 Family †Eoconchariidae Hou & Shu, 1987
         2 Family †Hallucigeniidae Conway Morris, 1977
         3 Family †Cardiodictyidae Hou & Bergström, 1995