Between brackets is the number of accepted extant species
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Shows the number of accepted extant species within the taxon
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- Biota (12 686)
- Kingdom Animalia (9 792)
- Phylum Acanthocephala (30)
- Phylum Annelida (618)
- Phylum Arthropoda (4 265)
- Phylum Brachiopoda (64)
- Phylum Bryozoa (363)
- Phylum Cephalorhyncha
- Phylum Chaetognatha (25)
- Phylum Chordata (1 415)
- Phylum Cnidaria (460)
- Phylum Ctenophora (11)
- Phylum Dicyemida (1)
- Phylum Echinodermata (638)
- Phylum Ectoprocta accepted as Bryozoa
- Phylum Entoprocta
- Phylum Gastrotricha (1)
- Phylum Gnathostomulida
- Phylum Hemichordata (6)
- Phylum Kinorhyncha (9)
- Phylum Loricifera
- Phylum Mesozoa accepted as Dicyemida
- Phylum Mollusca (753)
- Phylum Nematoda (396)
- Phylum Nemertea (75)
- Phylum Nemertina represented as Nemertea
- Phylum Platyhelminthes (134)
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera (281)
- Class Calcarea (13)
- Class Demospongiae (234)
- Subclass Ceractinomorpha accepted as Demospongiae
- Subclass Heteroscleromorpha (224)
- Order Axinellida (5)
- Order Biemnida (3)
- Order Bubarida
- Order Desmacellida
- Order Hadromerida accepted as Heteroscleromorpha
- Order Halichondrida accepted as Heteroscleromorpha
- Order Haplosclerida (37)
- Order Poecilosclerida (135)
- Suborder Latrunculina accepted as Poecilosclerida
- Suborder Microcionina accepted as Poecilosclerida
- Suborder Mycalina accepted as Poecilosclerida
- Suborder Myxillina accepted as Poecilosclerida
- Family Acarnidae Dendy, 1922 (12)
- Family Chondropsidae Carter, 1886 (1)
- Family Cladorhizidae Dendy, 1922 (9)
- Family Coelosphaeridae Dendy, 1922 (14)
- Family Crellidae Dendy, 1922 (3)
- Family Dendoricellidae Hentschel, 1923 (4)
- Family Desmacididae Schmidt, 1870 (1)
- Family Esperiopsidae Hentschel, 1923 (5)
- Family Guitarridae Dendy, 1924 (3)
- Family Hymedesmiidae Topsent, 1928 (18)
- Genus Bipocillopsis Koltun, 1964 accepted as Phorbas Duchassaing & Michelotti, 1864
- Genus Hemimycale Burton, 1934 (1)
- Genus Hymedesmia Bowerbank, 1864 (7)
- Genus Kirkpatrickia Topsent, 1912 (2)
- Genus Myxodoryx Burton, 1929 (1)
- Genus Phorbas Duchassaing & Michelotti, 1864 (5)
- Species Phorbas acanthochela (Koltun, 1964)
- Species Phorbas areolatus Bergquist & Fromont, 1988 accepted as Phorbas bergmontae Hajdu & Teixeira, 2011
- Species Phorbas bergmontae Hajdu & Teixeira, 2011
- Species Phorbas glaberrimus (Topsent, 1916)
- Species Phorbas leptochela (Hentschel, 1914) accepted as Hymedesmia (Hymedesmia) leptochela Hentschel, 1914
- Species Phorbas longurioides (Burton, 1932)
- Species Phorbas nexus (Koltun, 1964)
- Genus Plocamionida Topsent, 1927 (1)
- Genus Spanioplon Topsent, 1890 (1)
- Genus Stylopus Fristedt, 1885 accepted as Hymedesmia (Stylopus) Fristedt, 1885
- Family Iophonidae Burton, 1929 accepted as Acarnidae Dendy, 1922
- Family Iotrochotidae Dendy, 1922 (1)
- Family Isodictyidae Dendy, 1924 (12)
- Family Latrunculiidae Topsent, 1922 (3)
- Family Microcionidae Carter, 1875 (16)
- Family Mycalidae Lundbeck, 1905 (8)
- Family Myxillidae Dendy, 1922 (15)
- Family Phellodermidae van Soest & Hajdu, 2002 (2)
- Family Tedaniidae Ridley & Dendy, 1886 (8)
- Order Polymastiida (9)
- Order Suberitida (20)
- Order Tethyida (1)
- Order Tetractinellida (14)
- Subclass Keratosa (8)
- Subclass Tetractinomorpha accepted as Demospongiae
- Subclass Verongimorpha (2)
- Order Halisarcida accepted as Chondrillida
- Class Hexactinellida (33)
- Class Homoscleromorpha (1)
- Class Porifera incertae sedis
- Phylum Priapulida (4)
- Phylum Rotifera (163)
- Phylum Tardigrada (80)
- Kingdom Archaea (1)
- Kingdom Bacteria (310)
- Kingdom Chromista (956)
- Kingdom Fungi (740)
- Kingdom Plantae (822)
- Kingdom Protozoa (65)
