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
- Phylum Arthropoda
- Phylum Brachiopoda
- Phylum Bryozoa
- Class Bryozoa (awaiting allocation)
- Class Bryozoa incertae sedis
- Class Gymnolaemata
- Class Phylactolaemata
- Class Stenolaemata
- Order Cryptostomata † accepted as Cryptostomida †
- Order Cryptostomida †
- Order Cyclostomata accepted as Cyclostomatida
- Order Cyclostomatida
- Family Actinoporidae Vigneaux, 1949 †
- Family Alyonushkidae Grischenko, Gordon & Melnik, 2018
- Family Annectocymidae Hayward & Ryland, 1985
- Family Anyutidae Grischenko, Gordon & Melnik, 2018
- Family Bereniceidae Buge, 1957
- Family Calvetiidae Borg, 1944
- Family Canaliporidae †
- Family Canuellidae accepted as Cerioporidae Busk, 1859
- Family Cavidae d'Orbigny, 1854 †
- Family Celluliporidae Buge & Voigt, 1972 †
- Family Cerioporidae Busk, 1859
- Family Cinctiporidae Boardman, McKinney & Taylor, 1992
- Family Clausidae †
- Family Corymboporidae Smitt, 1866
- Family Corynotrypidae Dzik, 1981 †
- Family Crassodiscoporidae Brood, 1972 †
- Family Crisiidae Johnston, 1847
- Family Crisinidae d'Orbigny, 1853
- Family Crisuliporidae Buge, 1979
- Family Crownoporidae Ross, 1967 †
- Family Cyclostomatida (awaiting allocation)
- Family Cyclostomatida incertae sedis †
- Family Cytididae d'Orbigny, 1854
- Family Densiporidae Borg, 1944
- Family Diaperoeciidae Canu, 1918
- Family Diastoporidae Gregory, 1899
- Family Diploclemidae Gorjunova, 1992 †
- Family Disporellidae accepted as Lichenoporidae Smitt, 1866
- Family Eleidae d'Orbigny, 1852 †
- Family Entalophoridae Reuss, 1869
- Family Fasciculiporidae accepted as Frondiporidae Busk, 1859
- Family Fascigeridae accepted as Frondiporidae Busk, 1859
- Family Filisparsidae Borg, 1944 accepted as Oncousoeciidae Canu, 1918
- Family Flabellotrypidae †
- Family Frondiporidae Busk, 1859
- Family Fungellidae accepted as Corymboporidae Smitt, 1866
- Family Hastingsiidae Borg, 1944
- Family Heteroporidae Waters, 1880
- Family Horneridae Smitt, 1867
- Family Idmoneidae Busk, 1859
- Family Kukersellidae † accepted as Crownoporidae Ross, 1967 †
- Family Leiosoeciidae †
- Family Lichenoporidae Smitt, 1866
- Family Lobosoeciidae †
- Family Mecynoeciidae Canu, 1918
- Family Multisparsidae Bassler, 1935
- Family Oncousoeciidae Canu, 1918
- Family Petaloporidae Gregory, 1899 †
- Family Phaceloporidae Miller, 1889 †
- Family Plagioeciidae Canu, 1918
- Family Pseudidmoneidae Borg, 1944
- Family Pseudocerioporidae †
- Family Pustuloporidae Smitt, 1872
- Family Radioporidae †
- Family Sagenellidae Brood, 1975 †
- Family Semiceidae Buge, 1952
- Family Siphoniotyphlidae Voigt, 1967 †
- Family Spiroporidae Voigt, 1968 †
- Family Stegohorneridae Borg, 1944
- Family Stigmatoechidae Brood, 1972
- Family Stomatoporidae Pergens & Meunier, 1886
- Family Sulcocavidae †
- Family Terviidae Canu & Bassler, 1920
- Family Theonoidae Busk, 1859
- Family Theononidae
- Family Tretocycloeciidae
- Genus Alveolaria Busk, 1859 †
- Species Alveolaria semiovata Busk, 1859 †
- Genus Tetrocycloecia Canu, 1917 †
- Family Tubuliporidae Johnston, 1838
- Family Tubuliporoidea incertae sedis
- Genus Rodinopora Taylor & Grischenko, 1999
- Order Cystoporata † accepted as Cystoporida †
- Order Cystoporida †
- Order Fenestrata † accepted as Fenestrida †
- Order Fenestrida †
- Order Hederellida †
- Order Rhabdomesida † accepted as Cryptostomida †
- Order Septodaearia † accepted as Trepostomatida †
- Order Stenolaemata (awaiting allocation)
- Order Trepostomata † accepted as Trepostomatida †
- Order Trepostomatida †
- Order Trepostomida † accepted as Trepostomatida †
- Order Tubuliporata accepted as Cyclostomatida
- 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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