Between brackets is the number of accepted species
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2 Shows the number of accepted species within the taxon
3 The last expanded taxon is highlighted
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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
- Subclass Errantia
- Order Amphinomida
- Order Eunicida
- Order Phyllodocida
- Family Acoetidae Kinberg, 1856
- Genus Acaetes Malaquin & Dehorne, 1907 accepted as Acoetes Audouin & Milne Edwards, 1832
- Genus Acoeta Burmeister, 1837 accepted as Acoetes Audouin & Milne Edwards, 1832
- Genus Acoeta Valenciennes, 1833 accepted as Acoetes Audouin & Milne Edwards, 1832
- Genus Acoetes Audouin & Milne Edwards, 1832
- Genus Cydippe
- Genus Euarche Ehlers, 1887
- Genus Eumolpe Blainville, 1828
- Genus Eupanthalis McIntosh, 1876
- Genus Eupolyodontes Buchanan, 1894
- Genus Eupompe Kinberg, 1855
- Species Eupompe aurorea Grube, 1876 accepted as Panthalis aurorae (Grube, 1876)
- Species Eupompe australiensis McIntosh, 1885
- Species Eupompe grubei Kinberg, 1856 accepted as Acoetes grubei (Kinberg, 1856)
- Species Eupompe indica Beddard, 1889 accepted as Polyodontes maxillosus (Ranzani, 1817)
- Genus Neopanthalis Strelzov, 1968
- Genus Neopolyodontes Shen & Wu, 1993
- Genus Panthalis Kinberg, 1856
- Genus Panthelis Bohn, 1906 accepted as Panthalis Kinberg, 1856
- Genus Polyodontes Blainville, 1829
- Genus Polyodontes Renieri in Blainville, 1828
- Genus Polyodontus Eysenhardt, 1818
- Genus Ponthalis Retzius, 1857 accepted as Panthalis Kinberg, 1856
- Genus Pseudeupanthalis Fauvel, 1957
- Genus Restio Moore, 1903
- Genus Zachsiella Buzhinskaja, 1982
- Family Alciopidae Ehlers, 1864
- Family Antonbruunidae Fauchald, 1977
- Family Antonbruuniidae Auct. accepted as Antonbruunidae Fauchald, 1977
- Family Aphroditidae Malmgren, 1867
- Family Aphroditoidea (awaiting allocation)
- Family Calamyzidae Hartmann-Schröder, 1971 accepted as Syllidae Grube, 1850
- Family Chrysopetalidae Ehlers, 1864
- Family Eulepethidae Chamberlin, 1919
- Family Fossundecimidae Thompson, 1979 †
- Family Glyceridae Grube, 1850
- Family Goniadidae Kinberg, 1866
- Family Hesionidae Grube, 1850
- Family Ichthyotomidae Eisig, 1906
- Family Iopsilidae accepted as Iospilidae Bergström, 1914
- Family Iospilidae Bergström, 1914
- Family Iphionidae Kinberg, 1856
- Family Isopilidae accepted as Iospilidae Bergström, 1914
- Family Kynephoridae Ehlers, 1920 accepted as Pilargidae de Saint-Joseph, 1899
- Family Lacydoniidae Bergström, 1914
- Family Levidoridae
- Family Lopadorhynchidae accepted as Lopadorrhynchidae Claparède, 1868
- Family Lopadorrhynchidae Claparède, 1868
- Family Microphthalmidae Hartmann-Schröder, 1971
- Family Nautilinidae Miura & Laubier, 1989 accepted as Nautiliniellidae Miura & Laubier, 1990
- Family Nautiliniellidae Miura & Laubier, 1990
- Family Nephthyidae [Polychaeta, misspelling of Nephtyidae] accepted as Nephtyidae Grube, 1850
- Family Nephtyidae Grube, 1850
- Family Nereidae Savigny, 1820 accepted as Nereididae Blainville, 1818
- Family Nereididae Blainville, 1818
- Family Notophycidae Knox & Cameron, 1970 accepted as Nereididae Blainville, 1818
- Family Palmyridae Kinberg, 1858 accepted as Aphroditidae Malmgren, 1867
- Family Paralacydoniidae Pettibone, 1963
- Family Peisidicidae accepted as Pholoidae Kinberg, 1858
- Family Pholoidae Kinberg, 1858
- Family Pholoididae Fauchald, 1977 accepted as Sigalionidae Malmgren, 1867
- Family Phyllodocida incertae sedis
- Family Phyllodocidae Örsted, 1843
- Family Pilargidae de Saint-Joseph, 1899
- Family Pisionidae Southern, 1914 accepted as Sigalionidae Malmgren, 1867
- Family Polynoidae Malmgren, 1867
- Family Polyodontidae Buchanan, 1894 accepted as Acoetidae Kinberg, 1856
- Family Pontodoridae Bergström, 1914
- Family Sigalionidae Malmgren, 1867
- Family Sphaerodoridae Malmgren, 1867
- Family Syllidae Grube, 1850
- Family Talehsapiidae Misra, 1999 accepted as Pilargidae de Saint-Joseph, 1899
- Family Tomopteridae Johnston, 1865
- Family Typhloscolecidae Uljanin, 1878
- Family Yndolaciidae Støp-Bowitz, 1987
- Order Aciculata
- Order Amphinomorpha
- Order Athecanephria
- Order Canalipalpata
- Order Capitellida
- Order Chaetopterida
- Order Cirratulida
- Order Cossurida
- Order Ctenodrilida
- Order Dinophilida
- Order Errantida †
- Order Eunicemorpha
- Order Flabelligerida
- Order Magelonida
- Order Myzostomida
- Order Nerillida
- Order Opheliida
- Order Orbiniida
- Order Oweniida
- Order Phyllodocemorpha
- Order Poeobiida
- Order Polychaeta (awaiting allocation)
- Order Polychaeta incertae sedis
- Order Polygordiida
- Order Protodrilida
- Order Psammodrilida
- Order Pseudocirratulida
- Order Sabellida
- 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 †
- Genus Pseudoarenicola Liu & Yang, 1991 †
- 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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