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
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Subphylum Anthozoa
- Subphylum Medusozoa incertae sedis
- Subphylum Myxozoa
- Class Cnidaria (awaiting allocation)
- Class Cubozoa
- Class Cyclozoa
- Class Hydroconozoa †
- Class Hydrozoa
- Order Actinulida
- Order Anthoathecata
- Order Anthomedusae (awaiting allocation)
- Order Chondrophora
- Order Discomedusae
- Order Hydroida
- Order Hydrozoa (awaiting allocation)
- Order Hydrozoa incertae sedis
- Order Lemniscaterina †
- Order Leptomedusae
- Order Leptothecata
- Order Limnomedusae
- Order Milleporina accepted as Anthoathecata
- Order Narcomedusae
- Order Siphonophora accepted as Siphonophorae
- Order Siphonophorae
- Order Siphonophorida accepted as Siphonophorae
- Order Sphaeractinida †
- Order Stylasterina accepted as Anthoathecata
- Order Trachylina
- Family Geryoniidae Eschscholtz, 1829
- Family Halecreatidae accepted as Halicreatidae Fewkes, 1886
- Family Halicreatidae Fewkes, 1886
- Family Laingiidae Bouillon, 1978 accepted as Magapiidae Schuchert & Bouillon, 2009
- Family Petasidae Haeckel, 1879
- Family Ptychogastridae accepted as Ptychogastriidae Mayer, 1910
- Family Ptychogastriidae Mayer, 1910
- Family Rhopalonematidae Russell, 1953
- Genus Aglantha Haeckel, 1879
- Genus Aglaura Péron & Lesueur, 1810
- Genus Agliscra Haeckel, 1879
- Genus Amphlogona Bigelow, 1909 accepted as Amphogona Browne, 1905
- Genus Amphogona Browne, 1905
- Genus Arctapodema Dall, 1907
- Genus Beltanella Sprigg, 1947 †
- Genus Benthocodon Larson & Harbison, 1990
- Genus Calyptra Leuckart, 1856 accepted as Rhopalonema Gegenbaur, 1857
- Genus Colobonema Vanhöffen, 1902
- Genus Crossota Vanhöffen, 1902
- Genus Homoenema Hargitt, 1905 accepted as Homoeonema Maas, 1893
- Genus Homoionema Maas, 1905 accepted as Homoeonema Maas, 1893
- Genus Isonema Maas, 1906 accepted as Arctapodema Dall, 1907
- Genus Pantachogon Maas, 1893
- Genus Persa McCrady, 1859
- Genus Ransonia Kramp, 1947
- Genus Rhopalomena Metschnikoff, 1886 accepted as Rhopalonema Gegenbaur, 1857
- Genus Rhopalonema Gegenbaur, 1857
- Genus Sminthea Gegenbaur, 1857
- Genus Staaraglaura Lendenfeld, 1884 accepted as Stauraglaura Haeckel, 1879
- Genus Stauraglaura Haeckel, 1879
- Species Stauraglaura tetragonima Haeckel, 1879
- Genus Stauroglaura Lendenfeld, 1887 accepted as Stauraglaura Haeckel, 1879
- Genus Tetrorchis Bigelow, 1909
- Genus Trachynema Gegenbaur, 1854 accepted as Rhopalonema Gegenbaur, 1857
- Genus Trachyneme Whiteaves, 1901 accepted as Trachynema Gegenbaur, 1854
- Genus Vampyrocrossota Thuesen, 1993
- Genus Voragonema Naumov, 1971
- Family Trachylinida (awaiting allocation)
- Family Trachynematidae Gegenbaur, 1856 accepted as Rhopalonematidae Russell, 1953
- Genus Cordubia Mayoral, Liñán, Gámez Vintaned, Muñiz & Gozalo, 2004 †
- Genus Sphaerostromella Yabe & Sugiyama, 1931 †
- Class Protomedusae †
- Class Scyphozoa
- Class Staurozoa
- Order Melanoskleritoitidea †
- Family Hiemaloriidae Fedonkin, 1985 †
- Genus Euzebiola Sommer, 1954 † accepted as Sphenothallus Hall, 1847 †
- Genus Hallotheca Bouček, 1936 † accepted as Sphenothallus Hall, 1847 †
- Genus Pennalina Cope, 2005 †
- Genus Pywackia Landing in Landing, English & Keppie, 2010 †
- Genus Rhizostromella Parona in Parona, Crema & Prever, 1909 †
- Genus Sphenothallus Hall, 1847 †
- 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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