organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Animalia Linnaeus, 1758 - animals
     Eumetazoa Bütschli, 1910 - eumetazoans
       Bilateria Hatschek, 1888 - bilaterians see Subkingdom Bilateria Hatschek, 1888
         Protostomia Grobben, 1908 see Infrakingdom Protostomia Grobben, 1908
           Spiralia Schleip, 1929 - spiralians see Superphylum Spiralia Schleip, 1929
             Teloblastica (C. Nielsen, 1995) see [unranked] Protostomia Grobben, 1908
               Articulata Cuvier see [unranked] Protostomia Grobben, 1908
                 Euarticulata see [unranked] Protostomia Grobben, 1908
                   Panarthropoda Nielsen, 1995 - panarthropods
                     Phylum Arthropoda Siebold, 1848 - arthropods
                       Genus †Aglaspis Hall, 1862
                       Genus †Agnostus Brongniart, 1822
                       Genus †Alalcomenaeus Simonetta, 1970
                       Genus †Baltoeurypterus Størmer, 1973
                       Genus †Branchiocaris Briggs, 1976
                       Genus †Bredocaris Müller, 1983
                       Genus †Burgessia Walcott, 1912
                       Genus †Cambropachycope Walossek & Müller, 1990
                       Genus †Canadaspis Novozhilov, in Orlov, 1960
                       Genus †Emeraldella Walcott, 1912
                       Genus †Goticaris Walossek & Müller, 1990
                       Genus †Habelia Walcott, 1912
                       Genus †Leanchoilia Walcott, 1912
                       Genus Limulus Müller, 1785
                       Genus †Marrella Walcott, 1912 - lace crab
                       Genus †Martinssonia Müller & Walossek, 1986
                       Genus †Molaria Walcott, 1912
                       Genus †Naraoia Walcott, 1912
                       Genus †Odaraia Walcott, 1912
                       Genus †Olenoides Meek, 1877
                       Genus †Perspicaris Briggs, 1977
                       Genus †Plenocaris Whittington, 1974
                       Genus †Sanctacaris Briggs & Collins, 1988
                       Genus †Sarotrocercus Whittington, 1981
                       Genus †Sidneyia Walcott, 1911
                       Genus †Skara Muller, 1983
                       Genus †Triarthrus Green, 1832
                       Genus †Waptia Walcott, 1912
                       Genus †Yohoia Walcott, 1912
                       1 Subphylum Chelicerata Heymons, 1901
                       2 Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
                       3 Subphylum Tracheata