Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Annelida Lamarck, 1809 - segmented worms
     ?Genus †Dickinsonia Sprigg, 1947
     Genus Myzostoma Leuckart, 1829 see Genus Myzostomum Leuckart, 1827
     Genus Nereis Linnaeus, 1758
     Genus †Palaeoscolex Whittard, 1953
     Genus †Protoscolex Ulrich, 1878
     ?Genus †Spriggina Glaessner, 1958
     1 Class Polychaeta Grube, 1850 - polychaetes
     2 Class Oligochaeta Grube, 1850 - oligochaetes see [unranked] oligochaetous Clitellata
     3 Class Hirudinea Lamarck, 1818 - leeches see Subclass Hirudinida