Between brackets is the number of accepted species
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2 Shows the number of accepted species within the taxon
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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
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia 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
- Class Archaeocyatha †
- Class Archaeocyathea † accepted as Archaeocyatha †
- Class Calcarea
- Class Calcispongea
- Class Demospongea
- Class Heteractinida †
- Class Hexactinellida
- Order Amphidiscosa
- Order Amphidiscosida
- Family Amphidiscosida (awaiting allocation)
- Family Corythophoridae De Laubenfels, 1936 accepted as Pheronematidae Gray, 1870
- Family Hyalonematidae Gray, 1857
- Genus Carteria Gray, 1867 accepted as Hyalonema Gray, 1832
- Genus Chalaronema Ijima, 1927
- Genus Compsocalyx Schulze, 1904
- Genus Corynonema Ijima, 1927 accepted as Hyalonema Gray, 1832
- Genus Coscinonema Ijima, 1927 accepted as Hyalonema Gray, 1832
- Genus Cyliconema Ijima, 1927 accepted as Hyalonema Gray, 1832
- Species Cyliconema abyssale Lévi, 1964 accepted as Hyalonema abyssale (Lévi, 1964)
- Species Cyliconema apertum (Schulze, 1886) accepted as Hyalonema apertum Schulze, 1886
- Species Cyliconema curvisclera Lévi, 1964 accepted as Hyalonema curvisclera (Lévi, 1964)
- Species Cyliconema madagascarense Lévi, 1964 accepted as Hyalonema madagascarense (Lévi, 1964)
- Species Cyliconema martabanense (Schulze, 1900) accepted as Hyalonema martabanense Schulze, 1900
- Species Cyliconema nicobaricum (Schulze, 1904) accepted as Hyalonema nicobaricum Schulze, 1904
- Species Cyliconema polycaulum (Lendenfeld, 1915) accepted as Hyalonema polycaulum Lendenfeld, 1915
- Species Cyliconema tasmani Lévi, 1964 accepted as Hyalonema tasmani (Lévi, 1964)
- Genus Cyliconemaoida Dohrmann, 2017 accepted as Hyalonema Gray, 1832
- Genus Euhyalonema Ijima, 1927 accepted as Hyalonema Gray, 1832
- Genus Hyalochaeta Brandt, 1859 accepted as Hyalonema Gray, 1832
- Genus Hyalonema Gray, 1832
- Genus Hyalothrix Gray, 1867 accepted as Hyalonema Gray, 1832
- Genus Ijimaonema Özdikmen, 2009 accepted as Hyalonema Gray, 1832
- Genus Leiobolidium Schmidt, 1880 accepted as Hyalonema Gray, 1832
- Genus Leptonema Lendenfeld, 1915 accepted as Cyliconemaoida Dohrmann, 2017
- Genus Lophophysema Schulze, 1900
- Genus Nectocollare Botting & Ma, 2022 †
- Genus Onconema Ijima, 1927 accepted as Hyalonema Gray, 1832
- Genus Oonema Lendenfeld, 1915 accepted as Hyalonema Gray, 1832
- Genus Oonema Ijima, 1927 accepted as Hyalonema Gray, 1832
- Genus Paradisconema Ijima, 1927 accepted as Hyalonema Gray, 1832
- Genus Phialonema Lendenfeld, 1915 accepted as Phialonemiella Tabachnick & Menshenina in Hooper & Van Soest, 2002
- Genus Phialonemiella Tabachnick & Menshenina in Hooper & Van Soest, 2002 accepted as Hyalonema Gray, 1832
- Genus Platella Tabachnick, 1988 accepted as Tabachnickia Özdikmen, 2010
- Genus Prionema Lendenfeld, 1915 accepted as Hyalonema Gray, 1832
- Genus Pteronema Ijima, 1927 accepted as Hyalonema Gray, 1832
- Genus Pteronema sensu Lévi, 1964 accepted as Hyalonema Gray, 1832
- Genus Serpula Coy, 1862 accepted as Hyalonema Gray, 1832
- Genus Skianema Lendenfeld, 1915 accepted as Oonema Lendenfeld, 1915
- Genus Stylocalyx Schulze, 1887 accepted as Cyliconema Ijima, 1927
- Genus Tabachnickia Özdikmen, 2010
- Genus Thallonema Lendenfeld, 1915 accepted as Oonema Lendenfeld, 1915
- Genus Thamnonema Ijima, 1927 † accepted as Thamnonemiella Tabachnick & Menshenina in Hooper & Van Soest, 2002
- Genus Thamnonemiella Tabachnick & Menshenina in Hooper & Van Soest, 2002 accepted as Hyalonema Gray, 1832
- Family Monoraphididae
- Family Monorhaphididae Ijima, 1927
- Family Pelicaspongiidae Rigby, 1970 †
- Family Pheronematidae Gray, 1870
- Family Stiodermatidae Finks, 1960 †
- Order Aulocalycoida
- Order Brooksellida † accepted as Reticulosa †
- Order Dictyida †
- Order Hemidiscosa †
- Order Hexactinellida (awaiting allocation)
- Order Hexactinellida incertae sedis
- Order Hexactinosa
- Order Hexactinosida
- Order Hyalospongea (awaiting allocation) †
- Order Hyalospongiae (awaiting allocation)
- Order Lychniscosa accepted as Lychniscosida
- Order Lychniscosida
- Order Lychniskida †
- Order Lyssacinosa accepted as Lyssacinosida
- Order Lyssacinosida
- Order Lyssakida †
- Order Reticulosa †
- Order Sphinctozoa
- Order Verticillitiida
- Class Hyalospongea accepted as Hexactinellida
- Class Hyalospongiae accepted as Hexactinellida
- Class Porifera (awaiting allocation)
- Class Spongiomorpha
- Class Stromatoporata accepted as Stromatoporoidea †
- Class Stromatoporoidea †
- Genus Achilleum Oken, 1815
- Genus Calliospongia Chen, Porras, Ma, Hou & Wörheide, 2023 †
- Genus Celtispongia Peel, 2019 †
- Genus Conciliospongia Botting, Zhang & Muir, 2017 †
- Genus Heteractenigma Botting & Zhang, 2013 †
- Genus Iniquispongia Senowbari-Daryan, Fürsich & Rashidi, 2020 †
- Genus Palaeomillepora Gabilly & Lafuste, 1957, nom. nud. † accepted as Palaeomillepora Gabilly & Lafuste, 1957 †
- Genus Palaeomillepora Gabilly & Lafuste, 1957 †
- Genus Perturbatacrusta Schlagintweit & Gawlick, 2011 †
- Genus Portalia Walcott, 1918 †
- Genus Sanningasoqia Peel, 2019 †
- Genus Seqineqia Peel, 2018 †
- Genus Seriespongia Senowbari-Daryan, Fürsich & Rashidi, 2020 †
- Genus Siphydora James-Clark, 1865
- Genus Sisamatispongia Peel, 2018 †
- Genus Sulukispicula Peel, 2019 †
- Genus Tallitaniqa Peel, 2018 †
- Genus Vasispongia Tang & Xiao in Tang et al., 2019 †
- 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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