Kingdom Animalia Linnaeus, 1758 - animals
   Phylum †Trilobozoa Fedonkin, 1985 see Class Trilobozoa
   1 Phylum Ctenophora Eschscholtz, 1829 - comb jellies
   2.1 Phylum Porifera Grant, 1836 - sponges
   2.2.1 Phylum Placozoa Grell, 1971
   2.2.2.1 Phylum Cnidaria Hatschek, 1888 - cnidarians
   2.2.2.2 Phylum Myxozoa Grassé, 1970, incertae sedis - myxozoans see Subphylum Myxozoa Grassé, 1970
   2.2.2.3.1.1 Phylum Xenoturbellida Westblad, 1949 see Subphylum Xenoturbellida Westblad, 1949
   2.2.2.3.1.2 Phylum Acoelomorpha Ehlers, 1985 - acoelomorphs see Subphylum Acoelomorpha Ehlers, 1985
   2.2.2.3.2.1 Phylum Orthonectida Giard, 1880 - orthonectids
   2.2.2.3.2.2 Phylum Rhombozoa Krohn, 1839
   2.2.2.3.3.1.1.1 Phylum Cephalochordata Owen, 1846 see Subphylum Cephalochordata Owen, 1846
   2.2.2.3.3.1.1.2.1 Phylum Tunicata Lamarck, 1816
   2.2.2.3.3.1.1.2.2 Phylum Craniata Linnaeus, 1758 see Subphylum Vertebrata Cuvier, 1812
   2.2.2.3.3.1.2.1 Phylum Echinodermata Bruguière, 1789 - echinoderms
   2.2.2.3.3.1.2.2 Phylum Hemichordata Bateson, 1885 - hemichordates
   2.2.2.3.3.2.1 Phylum Chaetognatha Leuckart, 1854 - chaetognaths
   2.2.2.3.3.2.2.1.1 Phylum Nematoda Gegenbaur, 1859 - round worms
   2.2.2.3.3.2.2.1.2 Phylum Nematomorpha Vejdovsky, 1886 - horsehair worms
   2.2.2.3.3.2.2.2 Phylum Tardigrada Doyère, 1840 - tardigrades
   2.2.2.3.3.2.2.3.1 Phylum Onychophora Grube, 1853 - velvet worms
   2.2.2.3.3.2.2.3.2 Phylum Arthropoda Siebold, 1848 - arthropods
   2.2.2.3.3.2.2.4.1 Phylum Priapulida Delage & Hérouard, 1897 - priapulids
   2.2.2.3.3.2.2.4.2 Phylum Loricifera Kristensen, 1983 - loriciferans
   2.2.2.3.3.2.2.4.3 Phylum Kinorhyncha Reinhard, 1887 - kinorhynchs
   2.2.2.3.3.2.3.1.1 Phylum Bryozoa Ehrenberg, 1831 - bryozoans
   2.2.2.3.3.2.3.1.2.1 Phylum Entoprocta Nitsche, 1869 - entoprocts
   2.2.2.3.3.2.3.1.2.2 Phylum Cycliophora Funch & Kristensen, 1995 - cycliophorans
   2.2.2.3.3.2.3.2.1.1 Phylum Annelida Lamarck, 1809 - segmented worms
   2.2.2.3.3.2.3.2.1.2 Phylum Spincula nom. null. see Phylum Sipuncula Rafinesque, 1814
   2.2.2.3.3.2.3.2.1.3 Phylum Echiura Sedgwick, 1898 - spoon worms, echiurans see Class Echiura
   2.2.2.3.3.2.3.2.2 Phylum Mollusca Linnaeus, 1758 - molluscs
   2.2.2.3.3.2.3.2.3 Phylum Nemertea Schultze, 1851 - ribbon worms
   2.2.2.3.3.2.3.2.4.1 Phylum Brachiopoda Duméril, 1806 - brachiopods
   2.2.2.3.3.2.3.2.4.2 Phylum Phoronida Hatschek, 1888 - phoronids
   2.2.2.3.3.2.3.3.1 Phylum Gastrotricha Metschnikoff, 1864 - gastrotrichs
   2.2.2.3.3.2.3.3.2 Phylum Platyhelminthes Gegenbaur, 1859 - flatworms
   2.2.2.3.3.2.3.3.3.1 Phylum Gnathostomulida Ax, 1956 - gnathostomulids
   2.2.2.3.3.2.3.3.3.2 Phylum Micrognathozoa Kristensen & Funch, 2000
   2.2.2.3.3.2.3.3.3.3.1 Phylum Rotifera Cuvier, 1798 - rotifers see Phylum Syndermata Ahlrichs, 1995
   2.2.2.3.3.2.3.3.3.3.2 Phylum Acanthocephala Kohlreuther, 1771 - acanthocephalans see [unranked] Acanthocephala Kohlreuther, 1771