Acalycigorgia Kükenthal & Gorzawsky, 1908 accepted as Acanthogorgia Gray, 1857 (name verified source)
Acanthacis Deichmann, 1936 (verified source for family)
Acanthoaxiidae van Ofwegen & McFadden, 2010 (current name source)
Acanthoaxiidae van Ofwegen & McFadden, 2010 (taxonomy source)
Acanthogorgia Gray, 1857 (verified source for family)
Acanthogorgiidae Gray, 1859 (current name source)
Acanthogorgiidae Gray, 1859 (taxonomy source)
Acanthoisis Studer, 1887 (verified source for family)
Acanthomuricea Hentschel, 1903 (verified source for family)
Acrophytidae McFadden & van Ofwegen, 2017 (taxonomy source)
Acropsammia Gerth, 1933 (verified source for family)
Acropsammia Gerth, 1933 (current name source)
Acrossotidae Bourne, 1914 (name verified source)
Acrossotidae Bourne, 1914 (taxonomy source)
Actinantha Lesson, 1831 accepted as Xenia Lamarck, 1816 (source of synonymy)
Actiniaria (name verified source)
Actiniaria (current name source)
Actiniaria (habitat flag source)
Actiniaria (taxonomy source)
Agaricoides Simpson, 1905 (verified source for family)
Ainigmaptilidae Carlgren, 1943 accepted as Primnoidae Gray, 1857 (source of synonymy)
Alaskagorgia Sánchez & Cairns, 2004 (verified source for family)
Alcyonacea accepted as Octocorallia (source of synonymy)
Alcyoniidae Lamouroux, 1812 (current name source)
Alcyoniidae Lamouroux, 1812 (taxonomy source)
Aldersladum Benayahu & McFadden, 2011 (verified source for family)
Alertigorgia Kükenthal, 1908 (verified source for family)
Alexella Gray, 1869 accepted as Carijoa F. Müller, 1867 (source of synonymy)
Aliena Breedy, McFadden & Cortés, 2023 (current name source)
Aliena Breedy, McFadden & Cortés, 2023 (basis of record)
Aliena Breedy, McFadden & Cortés, 2023 (verified source for family)
Aliena Breedy, McFadden & Cortés, 2023 (name verified source)
Aliena Breedy, McFadden & Cortés, 2023 (extant flag source)
Aliena Breedy, McFadden & Cortés, 2023 (habitat flag source)
Altumia Benayahu, McFadden & Shoham, 2017 (verified source for family)
Ammothea Lamarck, 1816 accepted as Lemnalia Gray, 1868 (source of synonymy)
Amocella Gray, 1869 accepted as Lobophytum Marenzeller, 1886 (source of synonymy)
Anais Lesson, 1843 accepted as Bolinopsis L. Agassiz, 1860 (source of synonymy)
Anastromvos Bryce & Wilson, 2019 (verified source for family)
Anastromvos Bryce & Wilson, 2019 (current name source)
Anicella Gray, 1868 accepted as Melithaea Milne Edwards, 1857 (source of synonymy)
Anopla accepted as Nemertea (source of synonymy)
Anthogorgia Verrill, 1868 (current name source)
Anthogorgia Verrill, 1868 (verified source for family)
Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (extant flag source)
Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (name verified source)
Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (habitat flag source)
Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (basis of record)
Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (taxonomy source)
Anthogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (current name source)
Anthomastus Verrill, 1878 (verified source for family)
Anthomuricea Studer, 1887 (verified source for family)
Anthoplexaura Kükenthal, 1908 (verified source for family)
Anthoptilidae Kölliker, 1880 (current name source)
Anthoptilidae Kölliker, 1880 (taxonomy source)
Anthothelidae Broch, 1916 accepted as Alcyoniidae Lamouroux, 1812 (source of synonymy)
Anthozoa (current name source)
Anthozoa (name verified source)
Anthozoa (extant flag source)
Anthozoa (taxonomy source)
Antipatharia (taxonomy source)
Antipatharia (current name source)
Aquaumbridae Breedy, van Ofwegen & Vargas, 2012 (taxonomy source)
Arachnanthidae accepted as Arachnactidae McMurrich, 1910 (source of synonymy)
Argentella Gray, 1870 accepted as Pteroeides Herklots, 1858 (extant flag source)
Argentella Gray, 1870 accepted as Pteroeides Herklots, 1858 (habitat flag source)
Argentella Gray, 1870 accepted as Pteroeides Herklots, 1858 (source of synonymy)
Arhynchocoela (habitat flag source)
Arhynchocoela (name verified source)
Arhynchocoela (current name source)
Arhynchocoela (extant flag source)
Arhynchocoela (taxonomy source)
Arhynchonemertea (extant flag source)
Arhynchonemertea (taxonomy source)
Arhynchonemertea (name verified source)
Arhynchonemertea (current name source)
Arhynchonemertea (habitat flag source)
Arulidae McFadden & Ofwegen, 2012 (taxonomy source)
Aspera Dautova, 2018 (verified source for family)
Asperogorgia Stiasny, 1943 accepted as Leptogorgia Milne Edwards, 1857 (verified source for family)
Asperogorgia Stiasny, 1943 accepted as Leptogorgia Milne Edwards, 1857 (name verified source)
Asperogorgia Stiasny, 1943 accepted as Leptogorgia Milne Edwards, 1857 (source of synonymy)
Asperogorgia Stiasny, 1943 accepted as Leptogorgia Milne Edwards, 1857 (basis of record)
Asperogorgia Stiasny, 1943 accepted as Leptogorgia Milne Edwards, 1857 (extant flag source)
Asperogorgia Stiasny, 1943 accepted as Leptogorgia Milne Edwards, 1857 (habitat flag source)
Asteriomyzostomidae Jägersten, 1940 (current name source)
Asteriomyzostomidae Jägersten, 1940 (name verified source)
Asteriomyzostomum Jägersten, 1940 (verified source for family)
Asteriomyzostomum Jägersten, 1940 (current name source)
Asteromyzostomidae Wagin, 1954 (taxonomy source)
Asteromyzostomidae Wagin, 1954 (name verified source)
Asteromyzostomidae Wagin, 1954 (current name source)
Astrogorgia Verrill, 1868 (verified source for family)
Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (habitat flag source)
Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (current name source)
Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (extant flag source)
Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (name verified source)
Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (basis of record)
Astrogorgiidae McFadden, van Ofwegen & Quattrini, 2024 (taxonomy source)
Astromuricea Germanos, 1895 (verified source for family)

 Subfamily

 for Daniela Koch, 1891

Authority given in WoRMS (2024) as von Koch, 1891. [details]

 Taxonomic remark

 for Anais Lesson, 1843

Junior homonym of Anais Lesson, 1840 (Aves). Current accepted name for the type species, A. quadricostata, is ... [details]

 Taxonomic remark

 for Coronephthya Utinomi, 1962

Neave (Nomenclator Zoologicus) has 2 entries for this genus name without comment, with publication details given as ... [details]

 Taxonomic remark

 for Coronephthya Utinomi, 1966

Neave (Nomenclator Zoologicus) has 2 entries for this genus name without comment, with publication details given as ... [details]

 Taxonomic remark

 for Faxiella Zapata-Guardiola & López-González, 2012

Originally a subgenus of Plumarella. [details]

 Taxonomic remark

 for Heteorogorgia Verrill, 1868

Original incorrect spelling; the spelling Heterogorgia (with same authorship and publication instance, i.e. ... [details]

 Taxonomic remark

 for Heterogorgia Verrill, 1868

Corrected original spelling (originally Hetereogorgia), refer WoRMS (2024 version). Heterogorgia Verrill, 1869 ... [details]

 Taxonomic remark

 for Pennatulacea

No longer recognised as a distinct order; previously included families now treated as a single superfamily ... [details]

 Taxonomic remark

 for Septodaearia †

Erected as a subclass of Anthozoa, to contain Septodaeum Bischoff, 1978, however the latter is presently considered ... [details]

 Taxonomic remark

 for Septodaeidae Bischoff, 1978 †

Erected as a family of Anthozoa in its own subclass/order, to contain Septodaeum Bischoff, 1978, however the latter ... [details]

 Taxonomic remark

 for Titanidium Deichmann, 1936

Cited authorship changed in WoRMS to Verrill, 1863 in 2021/2022 (reason unclear) [details]

 Taxonomic remark

 for Vioa Gray, 1870

Junior homonym of Vioa Nardo, 1833 (Porifera), also a syn. of Briareum Blainville, 1834 according to WoRMS (2024 ... [details]

 Taxonomic remark

 for Williamsium Moore, Alderslade & Miller, 2017

Initially placed tentatively in Anthothelidae by the describers, currently incertae sedis in Octocorallia, refer ... [details]