Between brackets is the number of accepted species
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- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Class Annelida (awaiting allocation)
- Class Clitellata
- Class Machaeridia
- Class Myzostomaria
- Class Polychaeta
- Subclass Echiura
- Order Aciculata
- Order Amphinomida
- Order Amphinomorpha
- Order Athecanephria
- Order Canalipalpata
- Order Capitellida
- Order Chaetopterida
- Order Cirratulida
- Order Cossurida
- Order Ctenodrilida
- Order Dinophilida
- Order Errantida †
- Order Eunicemorpha
- Order Eunicida
- Order Flabelligerida
- Order Magelonida
- Order Myzostomida
- Order Nerillida
- Order Opheliida
- Order Orbiniida
- Order Oweniida
- Order Phyllodocemorpha
- Order Phyllodocida
- Order Poeobiida
- Order Polychaeta (awaiting allocation)
- Order Polychaeta incertae sedis
- Order Polygordiida
- Order Protodrilida
- Order Psammodrilida
- Order Pseudocirratulida
- Order Sabellida
- Family Caobangidae accepted as Sabellidae Latreille, 1825
- Family Fabriciidae Rioja, 1923
- Family Sabellida incertae sedis †
- Family Sabellidae Latreille, 1825
- Family Sabellongidae Hartman, 1969 accepted as Sabellidae Latreille, 1825
- Family Serpulidae Rafinesque, 1835
- Genus Amphiserpula Uchida, 1978 accepted as Spiraserpula Regenhardt, 1961
- Genus Amplaria Knight-Jones, 1973 accepted as Amplicaria Knight-Jones, 1984
- Genus Amplicaria Knight-Jones, 1984
- Genus Anisolemus Gervais, 1841
- Genus Anisomelas Quatrefages, 1865
- Genus Anisomelus Templeton, 1835
- Genus Anomalorbis Vine, 1972
- Genus Antalium Guettard, 1770 accepted as Serpula Linnaeus, 1758
- Genus Apomatalos Uchida, 1978 accepted as Apomatolos Uchida, 1978
- Genus Apomatolos Uchida, 1978 accepted as Rhodopsis Bush, 1905
- Genus Apomatopsis de Saint-Joseph, 1894 accepted as Apomatus Philippi, 1844
- Genus Apomatus Philippi, 1844
- Genus Austrorotularia Macellari, 1984 † accepted as Rotularia Defrance, 1827 †
- Genus Bathyditrupa Kupriyanova, 1993
- Genus Bathyvermilia Zibrowius, 1973
- Genus Bipygmaeus Regenhardt, 1961 †
- Genus Bonhourella Gravier, 1905 accepted as Ditrupa Berkeley, 1835
- Genus Bunode Schweigger, 1820 accepted as Bunodus Guettard, 1770
- Genus Bunodus de Blainville, 1817 accepted as Bunodus Guettard, 1770
- Genus Bunodus Guettard, 1770
- Genus Burtinella Mörch, 1861 † accepted as Rotularia Defrance, 1827 †
- Genus Bushiella Knight-Jones, 1973
- Genus Calcareopomatus Straughan, 1967 accepted as Neovermilia Day, 1961
- Genus Capeospira Pillai, 1970
- Genus Carpathiella Misik, Sotak & Ziegler, 1999 †
- Genus Chaetinopoma Sumner, Osburne & Cole, 1913 accepted as Chitinopoma Levinsen, 1884
- Genus Charybs Montfort, 1810 in Mörch, 1863
- Genus Chitinipoma Norman, 1897 accepted as Chitinopoma Levinsen, 1884
- Genus Chitinopoma Levinsen, 1884
- Genus Chitinopomoides Benham, 1927
- Genus Circeis Saint-Joseph, 1894
- Genus Codonytes de Quatrefages, 1866 accepted as Hydroides Gunnerus, 1768
- Genus Conchoserpula Blainville, 1818 accepted as Spirobranchus Blainville, 1818
- Genus Conopomatus Pillai, 1960 accepted as Spirobranchus Blainville, 1818
- Genus Crinoserpula Uchida, 1978 accepted as Serpula Linnaeus, 1758
- Genus Crosslandiella Monro, 1933 accepted as Pseudovermilia Bush, 1907
- Genus Crozetospira Rzhavsky, 1997
- Genus Crucifera Benedict, 1887 accepted as Crucigera Benedict, 1887
- Genus Crucigera Benedict, 1887
- Genus Cycloplacostegus Jäger, 2004 †
- Genus Cyenoserpula Ziegler, 1984
- Genus Cymospira Blainville, 1828 accepted as Spirobranchus Blainville, 1818
- Genus Cysmopira Gervais, 1844
- Genus Cystopomatus Gravier, 1911 accepted as Hyalopomatus Marenzeller, 1878
- Genus Dasynema de Saint-Joseph, 1894
- Genus Desiospira
- Genus Dexiorbis Chamberlin, 1919
- Genus Dexiospira Caullery & Mesnil, 1897 accepted as Neodexiospira Pillai, 1970
- Genus Dextralia Knight-Jones, 1973
- Genus Dipomatus Ehlers, 1913 accepted as Serpula Linnaeus, 1758
- Genus Ditrupa Berkeley, 1835
- Genus Ditrypa Agassiz, 1846 accepted as Ditrupa Berkeley, 1835
- Genus Dorsoserpula Parsch, 1956 †
- Genus Duplicaria Vine, 1972 accepted as Vinearia Knight-Jones, 1984
- Genus Ehlerprotula Uchida, 1978 accepted as Protula Risso, 1826
- Genus Enpomatus Philippi, 1844 accepted as Hydroides Gunnerus, 1768
- Genus Eoplacostegus Regenhardt, 1961 † accepted as Placostegus Philippi, 1844
- Genus Eucarphus Mörch, 1863 accepted as Hydroides Gunnerus, 1768
- Genus Eulaeospira Pillai, 1970
- Genus Eupamotus accepted as Hydroides Gunnerus, 1768
- Genus Eupomatos McIntosh, 1885 accepted as Eupomatus Philippi, 1844
- Genus Eupomatus Philippi, 1844 accepted as Hydroides Gunnerus, 1768
- Genus Eupotamus Troschel & Ruthe, 1853 accepted as Eupomatus Philippi, 1844
- Genus Fauveldora Knight-Jones, 1972 accepted as Neodexiospira Pillai, 1970
- Genus Ficopomatus Southern, 1921
- Genus Filagrana Gervais & Beneden, 1859
- Genus Filigrana Blainville, 1828 accepted as Filograna Oken, 1815
- Genus Filigrana Mörch, 1863 accepted as Filograna Berkeley, 1835
- Genus Filipora Fleming, 1828 accepted as Filograna Berkeley, 1835
- Genus Filograna Oken, 1815
- Genus Filograna Berkeley, 1835
- Genus Filogranaella accepted as Filogranella Ben-Eliahu & Dafni, 1979
- Genus Filogranella Ben-Eliahu & Dafni, 1979
- Genus Filogranula Langerhans, 1884
- Genus Floriprotis Uchida, 1978
- Genus Flucticularia Regenhardt, 1961 †
- Genus Galaolaria Lucas, 1840 accepted as Galeolaria Lamarck, 1818
- Genus Galeolaria Lamarck, 1818
- Genus Galeoloria accepted as Galeolaria Lamarck, 1818
- Genus Genicularia Quenstedt, 1858 †
- Genus Glandifera Regenhardt, 1961 †
- Genus Glossopsis Bush, 1905 accepted as Hydroides Gunnerus, 1768
- Genus Gynaeconitis Regenhardt, 1961 †
- Genus Gyromices Etheridge, 1880 † accepted as Spirorbis Daudin, 1800
- Genus Gyromyces H.R. Göppert in E.F. Germar, 1853 † accepted as Spirorbis Daudin, 1800
- Genus Hamulus Morton, 1834 † accepted as Pyrgopolon de Montfort, 1808
- Genus Helena Castelnau, 1842 accepted as Protula Risso, 1826
- Genus Helicosiphon Gravier, 1907
- Genus Helicosyphon Gravier, 1907 accepted as Helicosiphon Gravier, 1907
- Genus Heterodisca Fleming, 1825
- Genus Hyalopomatopsis de Saint-Joseph, 1894 accepted as Hyalopomatus Marenzeller, 1878
- Genus Hyalopomatus Marenzeller, 1878
- Genus Hyalopotamus Urban, 1880 accepted as Hyalopomatus Marenzeller, 1878
- Genus Hydroides Gunnerus, 1768
- Genus Isovermilia Rosenfeldt, 1979 accepted as Semivermilia ten Hove, 1975
- Genus Janita Saint Joseph, 1894 †
- Genus Janua Saint-Joseph, 1894
- Genus Josephella Caullery & Mesnil, 1896
- Genus Josephella Ben-Eliahu & Payiatas, 1999
- Genus Jugaria Knight-Jones, 1978 accepted as Bushiella Knight-Jones, 1973
- Genus Kimberleya Pillai, 2009
- Genus Knightjonesia Pillai, 2009
- Genus Laeospira Caullery & Mesnil, 1897
- Genus Laminatubus ten Hove & Zibrowius, 1986
- Genus Leodora Saint-Joseph, 1894
- Genus Leospira accepted as Laeospira Caullery & Mesnil, 1897
- Genus Longitubus Howell, 1943 † accepted as Protula Risso, 1826
- Genus Mammetuba Ghare & Vartak, 1984 †
- Genus Marifugia Absolon & Hrabe, 1930
- Genus Marsipospira Bailey, 1969 accepted as Protolaeospira Pixell, 1912
- Genus Membranopsis Bush, 1910 accepted as Protula Risso, 1826
- Genus Mera Saint-Joseph, 1894 accepted as Janua Saint-Joseph, 1894
- Genus Mercerella Fauvel, 1923 accepted as Ficopomatus Southern, 1921
- Genus Merceriella Fauvel, 1923 accepted as Ficopomatus Southern, 1921
- Genus Mercierella Fauvel, 1923 accepted as Ficopomatus Southern, 1921
- Genus Mercierellopsis Rioja, 1945 accepted as Ficopomatus Southern, 1921
- Genus Metalaeospira Pillai, 1970
- Genus Metavermilia Bush, 1905
- Genus Microprotula Uchida, 1978
- Genus Microserpula Dons, 1930 accepted as Chitinopoma Levinsen, 1884
- Genus Miroserpula Dons, 1930 accepted as Chitinopoma Levinsen, 1884
- Genus Moerchia Mayer, 1860 † accepted as Rotularia Defrance, 1827 †
- Genus Morchia Mayer, 1860 † accepted as Rotularia Defrance, 1827 †
- Genus Mörchia Mayer, 1860 † accepted as Rotularia Defrance, 1827 †
- Genus Mucroserpula Regenhardt, 1961 †
- Genus Neodexiospira Pillai, 1970
- Genus Neomicrorbis Rovereto, 1904
- Genus Neopomatus Pillai, 1960 accepted as Ficopomatus Southern, 1921
- Genus Neovermilia Day, 1961
- Genus Nidificaria Knight-Jones, 1984
- Genus Niditicaria accepted as Nidificaria Knight-Jones, 1984
- Genus Nidularia Knight-Jones, 1978 accepted as Nidificaria Knight-Jones, 1984
- Genus Nogrobs Montfort, 1808
- Genus Nogrops Berthold in Latreille, 1827 accepted as Nogrobs Montfort, 1808
- Genus Olga Jones, 1962 accepted as Spirobranchus Blainville, 1818
- Genus Olgaharmania Rioja, 1941 accepted as Hydroides Gunnerus, 1768
- Genus Omphaloma McIntosh, 1885 accepted as Omphalopoma Mörch, 1863
- Genus Omphalopoma Mörch, 1863
- Genus Omphalopomatopsis Saint Joseph, 1894 accepted as Omphalopomopsis Saint-Joseph, 1894
- Genus Omphalopomopsis Saint-Joseph, 1894
- Genus Pannoserpula Jaeger, Kapitzke & Rieter, 2001 †
- Genus Paradexiospira Caullery & Mesnil, 1897
- Genus Paralaeospira Caullery & Mesnil, 1897
- Genus Paraprotis Uchida, 1978
- Genus Paraprotula Uchida, 1978 accepted as Protula Risso, 1826
- Species Paraprotula apomatoides Uchida, 1978 accepted as Protula apomatoides (Uchida, 1978)
- Genus Paraserpula Southward, 1963 accepted as Serpula Linnaeus, 1758
- Genus Paravermilia Bush, 1905 accepted as Vermiliopsis Saint-Joseph, 1894
- Genus Pastula Westwood in Blyth, 1840 accepted as Protula Risso, 1826
- Genus Paumotella Chamberlin, 1919
- Genus Pegmaticula Regenhardt, 1961 †
- Genus Penicillum Seba, 1758 accepted as Spirobranchus Blainville, 1818
- Genus Pentaditrupa Regenhardt, 1961 †
- Genus Pentaserpula Parsch, 1956 † accepted as Genicularia Quenstedt, 1858 †
- Genus Peotula Sun, 1998 accepted as Protula Risso, 1826
- Genus Peraserpula Regenhardt, 1961 †
- Genus Philippiprotula Uchida, 1978 accepted as Protula Risso, 1826
- Genus Phycopomatus Por & Dimentman, 1989 accepted as Ficopomatus Southern, 1921
- Genus Pileolaria Claparède, 1868
- Genus Pillaiospira Knight-Jones, 1973
- Genus Piratesa Templeton, 1835
- Genus Pirgoplon Paetel, 1875 † accepted as Pyrgopolon de Montfort, 1808
- Genus Pirgopolon Deshayes, 1832 † accepted as Pyrgopolon de Montfort, 1808
- Genus Pixellgrana Uchida, 1978 accepted as Protis Ehlers, 1887
- Genus Pixellia Pillai, 1970 accepted as Paralaeospira Caullery & Mesnil, 1897
- Genus Placostegopsis Saint-Joseph, 1894 accepted as Placostegus Philippi, 1844
- Genus Placostegus Philippi, 1844
- Genus Placotegus McIntosh, 1885 accepted as Placostegus Philippi, 1844
- Genus Plagostegus Philippi, 1844 accepted as Placostegus Philippi, 1844
- Genus Podioceros Quatrefages, 1866 accepted as Spirobranchus Blainville, 1818
- Genus Polyphragma Quatrefages, 1866 accepted as Hydroides Gunnerus, 1768
- Genus Pomalostegus Schmarda, 1861 accepted as Pomatostegus Schmarda, 1861
- Genus Pomataceros Quatrefages in Quatrefages (Vaillant), 1866 accepted as Pomatoceros Philippi, 1844
- Genus Pomatoceropis Gravier, 1906
- Genus Pomatoceropsis Holly, 1935 accepted as Spirobranchus Blainville, 1818
- Genus Pomatoceropsis Gravier, 1906 accepted as Spirobranchus Blainville, 1818
- Genus Pomatoceros Philippi, 1844 accepted as Spirobranchus Blainville, 1818
- Genus Pomatocerus Mörch, 1863 accepted as Pomatoceros Philippi, 1844
- Genus Pomatocerus Philippi, 1844 accepted as Pomatoceros Philippi, 1844
- Genus Pomatoceus Hansen, 1878 accepted as Pomatoceros Philippi, 1844
- Genus Pomatoleios Pixell, 1913 accepted as Spirobranchus Blainville, 1818
- Genus Pomatostegus Schmarda, 1861
- Genus Potamoceras Philippi, 1844 accepted as Pomatoceros Philippi, 1844
- Genus Potamoceros Philippi, 1844 accepted as Pomatoceros Philippi, 1844
- Genus Potamocerus Tauber, 1879 accepted as Pomatoceros Philippi, 1844
- Genus Praerotularia Lommerzheim, 1979 †
- Genus Prodexiospira Pillai, 1970
- Genus Proliserpula Regenhardt, 1961 †
- Genus Proluta Schmarda, 1861 accepted as Protula Risso, 1826
- Genus Propomatoceros Ware, 1975 †
- Genus Protectoconorca Jäger, 1983 †
- Genus Protis Ehlers, 1887
- Genus Protohydroides Uchida, 1978 accepted as Hydroides Gunnerus, 1768
- Genus Protolaeospira Pixell, 1912
- Genus Protoleodora Pillai, 1970
- Genus Protolopsis Fischli, 1900
- Genus Protoplacostegus Bush, 1905
- Genus Protoserpula Uchida, 1978 accepted as Serpula Linnaeus, 1758
- Genus Protula Risso, 1826
- Genus Protulopsis Saint-Joseph, 1894 accepted as Protula Risso, 1826
- Genus Pseudochitinopoma Zibrowius, 1969
- Genus Pseudomicrorbis Jäger, 2011 †
- Genus Pseudopomatoceros Holly, 1936 accepted as Spirobranchus Blainville, 1818
- Genus Pseudoprotula Pillai, 2009
- Genus Pseudoserpula Straughan, 1967
- Genus Pseudovermilia Bush, 1907
- Genus Psygmatobranchus Agassiz, 1845
- Genus Psygmobranchus Philippi, 1844 accepted as Protula Risso, 1826
- Genus Pycgopolon Brioli in Zittel, 1910 † accepted as Pyrgopolon de Montfort, 1808
- Genus Pygopolon Fischer, 1885 † accepted as Pyrgopolon de Montfort, 1808
- Genus Pyngopole Reichenbach, 1828 † accepted as Pyrgopolon de Montfort, 1808
- Genus Pyrgoplon Paetel, 1875 † accepted as Pyrgopolon de Montfort, 1808
- Genus Pyrgopolon de Montfort, 1808
- Genus Pyrgopoton McIntosh, 1923 † accepted as Pyrgopolon de Montfort, 1808
- Genus Rhodopsis Bush, 1905
- Genus Romanchella Caullery & Mesnil, 1897
- Genus Rotularia Defrance, 1827 †
- Genus Ruxingella Stiller, 2000 †
- Genus Salmacina Claparède, 1870
- Genus Salmacinoidea Katto, 1977
- Genus Salmacinopsis Bush, 1910 accepted as Protula Risso, 1826
- Genus Salmacis Claparède, 1869 accepted as Salmacina Claparède, 1870
- Genus Salmacyna Hallez, 1889 accepted as Salmacina Claparède, 1870
- Genus Sarcinella Regenhardt, 1961 †
- Genus Schizocraspedon Bush, 1905 accepted as Hydroides Gunnerus, 1768
- Genus Sclerostyla Mörch, 1863 accepted as Pyrgopolon de Montfort, 1808
- Genus Semiserpula Imajima, 1979 accepted as Serpula Linnaeus, 1758
- Genus Semiserpula Wetzel, 1957 †
- Genus Semivermilia ten Hove, 1975
- Genus Serpola Chiaje, 1827 accepted as Serpula Linnaeus, 1758
- Genus Serpula Linnaeus, 1758
- Genus Serpulites Blumenbach, 1803 † accepted as Serpula Linnaeus, 1758
- Genus Serpulus Montfort, 1810 accepted as Serpula Linnaeus, 1758
- Genus Simplaria Knight-Jones, 1984
- Genus Simplicaria Knight-Jones, 1973 accepted as Simplaria Knight-Jones, 1984
- Genus Sinistrella Chamberlin, 1919 accepted as Bushiella Knight-Jones, 1973
- Genus Sinoditrupa Yu & Wang, 1981
- Genus Sipruloea Valette, 1925 † accepted as Rotularia Defrance, 1827 †
- Genus Sphaeropomatus Treadwell, 1934 accepted as Ficopomatus Southern, 1921
- Genus Spimella Lucas, 1840
- Genus Spinorbis Guérin-Méneville, 1844 accepted as Spirorbis Daudin, 1800
- Genus Spirabranchus Blainville, 1818 accepted as Spirobranchus Blainville, 1818
- Genus Spiramella Blainville, 1828 accepted as Protula Risso, 1826
- Genus Spiramilla Milne-Edwards in Lamarck, 1838
- Genus Spiraserpula Regenhardt, 1961
- Genus Spirillium Zittel, 1880 †
- Genus Spirillum Oken, 1807 accepted as Circeis Saint-Joseph, 1894
- Genus Spirilum Rafinesque, 1815 †
- Genus Spirirbis Bush, 1910 accepted as Spirorbis Daudin, 1800
- Genus Spirobis Verrill, 1882 accepted as Spirorbis Daudin, 1800
- Genus Spirobranchus Blainville, 1818
- Genus Spirobranchus Oken, 1818 accepted as Spirobranchus Blainville, 1818
- Genus Spirodiscus Fauvel, 1909
- Genus Spiroglyphis Rafinesque, 1815
- Genus Spiroglyphus Daudin, 1800
- Genus Spiromella McIntosh, 1923
- Genus Spirorba Lamarck, 1838 accepted as Spirorbis Daudin, 1800
- Genus Spirorbella Chamberlin, 1919 accepted as Dexiospira Caullery & Mesnil, 1897
- Genus Spirorbides Chamberlin, 1919 accepted as Paradexiospira Caullery & Mesnil, 1897
- Genus Spirorbis Daudin, 1800
- Genus Spirorbula Nielsen, 1931 † accepted as Neomicrorbis Rovereto, 1904
- Genus Spirorbus Hall, 1859 accepted as Spirorbis Daudin, 1800
- Genus Spirulaea Bronn, 1827 † accepted as Rotularia Defrance, 1827 †
- Genus Stoa de Serres, 1855
- Genus Subprotula Bush, 1910 accepted as Vermiliopsis Saint-Joseph, 1894
- Genus Surpula Anon., 1839 accepted as Serpula Linnaeus, 1758
- Genus Tanturia Ben-Eliahu, 1976
- Genus Tebagatubus Senowbari-Daryan, 2005 †
- Genus Tectorotularia Regenhardt, 1961 † accepted as Rotularia Defrance, 1827 †
- Genus Temporaria Straughan, 1967 accepted as Spirobranchus Blainville, 1818
- Genus Tetraserpula Parsch, 1956 † accepted as Nogrobs Montfort, 1808
- Genus Tricopomatus Southern, 1921 accepted as Ficopomatus Southern, 1921
- Genus Triditrupa Regenhardt, 1961 †
- Genus Tubulostium Stoliczka, 1868 † accepted as Rotularia Defrance, 1827 †
- Genus Turbocavus Prentiss, Vasileiadou, Faulwetter, Arvanitidis & ten Hove, 2014
- Genus Turriserpula Dieni & Massari, 2021 †
- Genus Velorbis Knight-Jones & Knight-Jones, 1995
- Genus Vepreculina Regenhardt, 1961 †
- Genus Vermeliopsis [auct. lapsus] accepted as Vermiliopsis Saint-Joseph, 1894
- Genus Vermilia Lamarck, 1818
- Genus Vermiliops accepted as Vermiliopsis Saint-Joseph, 1894
- Genus Vermiliopsis Saint-Joseph, 1894
- Genus Vermillia Swainson, 1840 †
- Genus Vermolia Bellini, 1906 †
- Genus Vinearia Knight-Jones, 1984
- Genus Vitreotubus Zibrowius, 1979
- Genus Weixiserpula Stiller, 2000 †
- Genus Zibrovermilia Kupriyanova & Ippolitov, 2015
- Genus Zopyrus Kinberg, 1867 accepted as Serpula Linnaeus, 1758
- Family Spirorbidae accepted as Serpulidae Rafinesque, 1835
- Order Scolecida
- Order Serpulimorpha
- Order Spintherida
- Order Spiomorpha
- Order Spionida
- Order Sternaspida
- Order Terebellida
- Order Terebellomorpha
- Order Thecanephria
- Genus Echinokleptus Muir, Botting, Lefebvre, Upton & Zhang, 2019 †
- Genus Kootenayscolex Nanglu & Caron, 2018 †
- Family Lobatocerebridae Rieger, 1980
- Genus Aulozoon Gehling & Runnegar, 2022 †
- Genus Gabavermis Troppenz, 2013 †
- Genus Lapillitubus Belaústegui & Belaústegui, 2017 †
- Genus Meanderovaleichnus Cónsole-Gonella & Aceñolaza, 2014 †
- Genus Shaihuludia Kimmig, LaVine, Schiffbauer, Egenhoff, Shelton & Leibach, 2023 †
- Genus Spitiprion Tonarová, Suttner, & Hints, 2024 †
- Genus Taonurus Saporta & Marion, 1881 †
- Genus Xiaoshibachaeta Yang, Aguado, Yang & Bleidorn, 2024 †
- Phylum Arthropoda
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Ecdysozoa incertae sedis †
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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