Adeonellopsis MacGillivray, 1886 (basis of record)
Adeonidae Busk, 1884 (basis of record)
Alcyonidiidae Johnston, 1837 (basis of record)
Alcyonidium Lamouroux, 1813 (basis of record)
Alcyonidium albidum Alder, 1857 (basis of record)
Alcyonidium disciforme Smitt, 1872 (basis of record)
Alcyonidium gelatinosum (Linnaeus, 1761) (basis of record)
Alcyonidium hirsutum (Fleming, 1828) (basis of record)
Alcyonidium mamillatum Alder, 1857 (basis of record)
Alcyonidium mytili Dalyell, 1848 accepted as Alcyonidioides mytili (Dalyell, 1848) (basis of record)
Amathia Lamouroux, 1812 (basis of record)
Amphiblestrum Gray, 1848 (basis of record)
Amphiblestrum auritum (Hincks, 1877) (basis of record)
Amphiblestrum flemingii (Busk, 1854) (basis of record)
Amphiblestrum septentrionalis (Kluge, 1906) accepted as Ramphonotus septentrionalis (Kluge, 1906) (basis of record)
Amphiblestrum solidum (Packard, 1863) (basis of record)
Annectocyma Hayward & Ryland, 1985 (basis of record)
Annectocyma major (Johnston, 1847) (basis of record)
Annectocymidae Hayward & Ryland, 1985 (basis of record)
Arachnidiidae Hincks, 1880 (basis of record)
Arachnidium Hincks, 1859 (basis of record)
Arachnidium clavatum Hincks, 1877 (basis of record)
Arachnidium hippothooides Hincks, 1859 (basis of record)
Arachnoidea Moore, 1903 (basis of record)
Arctonula Gordon & Grischenko, 1994 (basis of record)
Arctonula arctica (M. Sars, 1851) (basis of record)
Bicellarina Levinsen, 1909 (basis of record)
Bicellarina alderi (Busk, 1859) (basis of record)
Bitectiporidae MacGillivray, 1895 (basis of record)
Bowerbankia Farre, 1837 accepted as Amathia Lamouroux, 1812 (basis of record)
Bowerbankia gracilis Leidy, 1855 accepted as Amathia gracilis (Leidy, 1855) (basis of record)
Bowerbankia imbricata (Adams, 1798) accepted as Amathia imbricata (Adams, 1800) (basis of record)
Bowerbankia pustulosa (Ellis & Solander, 1786) accepted as Amathia pustulosa (Ellis & Solander, 1786) (basis of record)
Bryocryptellidae Vigneaux, 1949 (basis of record)
Buffonellaria Canu & Bassler, 1927 (basis of record)
Bugula Oken, 1815 (basis of record)
Bugula tricuspis Kluge, 1955 accepted as Bugulina tricuspis (Kluge, 1955) (basis of record)
Bugulidae Gray, 1848 (basis of record)
Buskia Alder, 1857 (basis of record)
Buskia nitens Alder, 1857 (basis of record)
Buskiidae Hincks, 1880 (basis of record)
Caberea Lamouroux, 1816 (basis of record)
Caberea ellisii (Fleming, 1814) (basis of record)
Callopora Gray, 1848 (basis of record)
Callopora craticula (Alder, 1856) (basis of record)
Callopora lineata (Linnaeus, 1767) (basis of record)
Callopora whiteavesi Norman, 1903 accepted as Flustrellaria whiteavesi (Norman, 1903) (basis of record)
Calloporidae Norman, 1903 (basis of record)
Candidae d'Orbigny, 1851 (basis of record)
Carbasea Gray, 1848 (basis of record)
Carbasea carbasea (Ellis & Solander, 1786) (basis of record)
Cauloramphus Norman, 1903 (basis of record)
Cauloramphus cymbaeformis (Hincks, 1877) (basis of record)
Cauloramphus spiniferum (Johnston, 1832) (basis of record)
Cellepora Linnaeus, 1767 (basis of record)
Cellepora pumicosa (Pallas, 1766) (basis of record)
Celleporella Gray, 1848 (basis of record)
Celleporella hyalina (Linnaeus, 1767) (basis of record)
Celleporidae Johnston, 1838 (basis of record)
Celleporina Gray, 1848 (basis of record)
Celleporina ventricosa (Lorenz, 1886) (basis of record)
Chaperiidae Jullien, 1888 (additional source)
Chartella Gray, 1848 (basis of record)
Chartella barleei (Busk, 1860) accepted as Terminoflustra barleei (Busk, 1860) (basis of record)
Cheilopora Levinsen, 1909 (basis of record)
Cheilopora sincera (Smitt, 1868) (basis of record)
Cheiloporina Canu & Bassler, 1923 (basis of record)
Cheiloporinidae Bassler, 1936 (additional source)
Cheilostomatida (basis of record)
Copidozoum Harmer, 1926 (basis of record)
Corynoporella Hincks, 1888 (basis of record)
Corynoporella tenuis Hincks, 1888 (basis of record)
Cribrilina Gray, 1848 (basis of record)
Cribrilina annulata (O. Fabricius, 1780) accepted as Juxtacribrilina annulata (Fabricius, 1780) (basis of record)
Cribrilina cryptooecium Norman, 1903 accepted as Cribrilina (Cribrilina) cryptooecium Norman, 1903 (basis of record)
Cribrilina punctata (Hassall, 1841) (basis of record)
Cribrilina spiculifera Kluge, 1955 (basis of record)
Cribrilina watersi Andersson, 1902 (basis of record)
Cribrilinidae Hincks, 1879 (basis of record)
Crisia Lamouroux, 1812 (basis of record)
Crisia aculeata Hassall, 1841 (basis of record)
Crisia constans Kluge, 1946 (basis of record)
Crisia denticulata (Lamarck, 1816) (basis of record)
Crisia denticulata var. arctica M. Sars, 1863 (basis of record)
Crisia eburnea (Linnaeus, 1758) (basis of record)
Crisia klugei Ryland, 1967 (basis of record)
Crisidia Milne Edwards, 1838 (basis of record)
Crisidia cornuta (Linnaeus, 1758) (basis of record)
Crisiella Borg, 1924 (basis of record)
Crisiella producta (Smitt, 1865) (basis of record)
Crisiidae Johnston, 1838 (basis of record)
Cryptosulidae Vigneaux, 1949 (basis of record)
Ctenostomatida (basis of record)
Cyclicoporidae Hincks, 1884 (additional source)
Cyclostomatida (basis of record)
Cylindroporella Hincks, 1877 (basis of record)
Cylindroporella tubulosa (Norman, 1868) (basis of record)
Cystisella Canu & Bassler, 1917 (basis of record)
Cystisella saccata (Busk, 1856) (basis of record)
Defrancia Bronn, 1825 accepted as Apsendesia Lamouroux, 1821 (basis of record)