Between brackets is the number of accepted species
1 Click on "-" to collapse/hide all child taxa
2 Shows the number of accepted species within the taxon
3 The last expanded taxon is highlighted
4 Click on "+" to expand/show all child taxa
5 Click to see the taxon details page
- 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 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
- Family Opheliidae Malmgren, 1867
- Genus Aloysina Claparède, 1864
- Genus Ammotripane Quatrefages, 1865 accepted as Ophelina Örsted, 1843
- Genus Ammotrypana Hoeven, 1850 accepted as Ophelina Örsted, 1843
- Genus Ammotrypane Rathke, 1843 accepted as Ophelina Örsted, 1843
- Genus Ammotrypanella McIntosh, 1878
- Genus Antiobactrum Chamberlin, 1919
- Genus Armandia Filippi, 1861
- Genus Cassandane Kinberg, 1866 accepted as Ophelia Savigny, 1822
- Genus Euzonus Grube, 1866 accepted as Thoracophelia Ehlers, 1897
- Genus Ladice Kinberg, 1866 accepted as Ophelina Örsted, 1843
- Genus Lobochesis Hutchings & Murray, 1984 accepted as Thoracophelia Ehlers, 1897
- Genus Nais Dujardin, 1839
- Genus Neomeris O.G. Costa, 1844
- Genus Nitetis Kinberg, 1866 accepted as Ophelia Savigny, 1822
- Genus Ofelia Costa, 1844 accepted as Ophelia Savigny, 1822
- Genus Omaria Grube, 1869 accepted as Ophelina Örsted, 1843
- Species Omaria aulopygos (Grube, 1869) accepted as Ammotrypane aulopygos (Grube, 1866)
- Species Omaria polycheles (Grube, 1869) accepted as Ammotrypane polycheles (Grube, 1866)
- Genus Ophelia Savigny, 1822
- Genus Ophelina Örsted, 1843
- Genus Ophelina Griffith, 1833 accepted as Ophelia Savigny, 1822
- Genus Opheria Örsted, 1843 accepted as Ophelia Savigny, 1822
- Genus Ophilia Audouin & Milne-Edwards, 1833 accepted as Ophelia Savigny, 1822
- Genus Oplilia Webster & Benedict, 1884 accepted as Ophelia Savigny, 1822
- Genus Oterlia Verrill, 1874 accepted as Ophelia Savigny, 1822
- Genus Pectinophelia Hartman, 1938 accepted as Thoracophelia Ehlers, 1897
- Genus Polyommatus Leuckart, 1854 accepted as Polyophthalmus Quatrefages, 1850
- Genus Polyophtalmos Philippi, 1861 accepted as Polyophthalmus Quatrefages, 1850
- Genus Polyophthalmus Quatrefages, 1850
- Genus Polyopthalmus Claparède, 1864 accepted as Polyophthalmus Quatrefages, 1850
- Genus Pseudophelia Katzmann, 1973 accepted as Ophelia Savigny, 1822
- Genus Pygophelia M. Sars, 1869
- Genus Tachytrypane McIntosh, 1876
- Genus Terpsichore Kinberg, 1866 accepted as Ophelina Örsted, 1843
- Genus Thoracophelia Ehlers, 1897
- Genus Urosiphon Chamberlin, 1919
- Family Scalibregmatidae Malmgren, 1867
- Family Scalibregmidae Malmgren, 1867 accepted as Scalibregmatidae Malmgren, 1867
- 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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