metazoans Haeckel 1874 - multicellular animals see Kingdom Animalia Linnaeus, 1758
   Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
     Phylum Arthropoda Siebold, 1848 - arthropods
       ?Family †Vendomiidae Keller, 1976 see Family Dickinsoniidae Harrington & Moore, 1955
         Genus †Onega Fedonkin, 1976, nom. illeg. see Genus Cephalonega Fedonkin, 2019
           1 †Onega stepanovi Fedonkin, 1976 see Cephalonega stepanovi (Fedonkin, 1976)