Acontiaria Stephenson, 1935 (additional source)
Acontiophoridae Carlgren, 1938 (additional source)
Acontiophorum (additional source)
Acontiophorum mortenseni Carlgren, 1938 (additional source)
Actinauge Verrill, 1883 (additional source)
Actinauge granulata Carlgren, 1928 (additional source)
Actinia equina (Linnaeus, 1758) (additional source)
Actiniaria (additional source)
Actiniidae Rafinesque, 1815 (additional source)
Actinodendronidae Haddon, 1898 accepted as Actinodendridae Haddon, 1898 (additional source)
Actinodiscidae Carlgren, 1949 (original description)
Actinodiscus de Blainville, 1830 accepted as Discosoma Rüppell & Leuckart, 1828 (additional source)
Actinodiscus nummiformis accepted as Discosoma nummiforme Rüppell & Leuckart, 1828 (additional source)
Actinostolidae Carlgren, 1932 (additional source)
Aiptasia Gosse, 1858 (additional source)
Aiptasia diaphana (Rapp, 1829) accepted as Exaiptasia diaphana (Rapp, 1829) (additional source)
Aiptasia pallida (Agassiz in Verrill, 1864) accepted as Exaiptasia pallida (Agassiz in Verrill, 1864) represented as Exaiptasia diaphana (Rapp, 1829) (additional source)
Aiptasiidae Carlgren, 1924 (additional source)
Alicia mirabilis Johnson, 1861 (additional source)
Aliciidae Duerden, 1895 (additional source)
Amphianthus brunneus (Pax, 1909) (additional source)
Amphianthus laevis Carlgren, 1938 (additional source)
Amphianthus sanctaehelenae Carlgren, 1941 (additional source)
Anemonia Risso, 1827 (additional source)
Anemonia sulcata (Pennant, 1777) (additional source)
Anthopleura Duchassaing de Fonbressin & Michelotti, 1860 (additional source)
Anthopleura anneae Carlgren, 1940 (additional source)
Anthopleura insignis Carlgren, 1940 (additional source)
Anthopleura michaelseni (Pax, 1920) (additional source)
Anthopleura mortenseni Carlgren, 1941 (additional source)
Anthopleura stellula (Hemprich & Ehrenberg in Ehrenberg, 1834) (additional source)
Anthopleura thallia (Gosse, 1854) (additional source)
Anthosactis Danielssen, 1890 (additional source)
Anthosactis capensis Carlgren, 1938 (additional source)
Anthostella Carlgren, 1938 (additional source)
Anthostella stephensoni Carlgren, 1938 (additional source)
Anthothoe Carlgren, 1938 (additional source)
Anthothoe chilensis (Lesson, 1830) (additional source)
Athenaria (additional source)
Boloceroidaria accepted as Boloceroididae Carlgren, 1924 (additional source)
Boloceroides Carlgren, 1899 (additional source)
Boloceroididae Carlgren, 1924 (additional source)
Bunodactis Verrill, 1899 (additional source)
Bunodactis patagoniensis (Carlgren, 1899) (additional source)
Bunodactis reynaudi (Milne Edwards, 1857) (additional source)
Bunodeopsis Andres, 1881 (additional source)
Bunodosoma Verrill, 1899 (additional source)
Bunodosoma capensis (Lesson, 1830) accepted as Bunodosoma capense (Lesson, 1830) (additional source)
Calliactis Verrill, 1869 (additional source)
Calliactis parasitica (Couch, 1842) (additional source)
Calliactis polypus (Forsskål, 1775) (additional source)
Condylactis Duchassaing de Fombressin & Michelotti, 1864 (additional source)
Condylactis aspera (Haddon & Shackleton, 1893) accepted as Macrodactyla aspera (Haddon & Shackleton, 1893) (additional source)
Corallimorpharia (additional source)
Corallimorphidae Hertwig, 1882 (additional source)
Corynactis Allman, 1846 (additional source)
Corynactis annulata (Verrill, 1867) (additional source)
Corynactis carnea Studer, 1879 (additional source)
Cryptodendrum Klunzinger, 1877 (additional source)
Cryptodendrum adhesivum accepted as Cryptodendrum adhaesivum (Klunzinger, 1877) (additional source)
Diadumenidae Stephenson, 1920 (additional source)
Edwardsia capensis Carlgren, 1938 (additional source)
Endocoelantheae accepted as Actinernoidea Stephenson, 1922 (additional source)
Endomyaria Stephenson, 1921 (additional source)
Gyrostoma helianthus (Hemprich & Ehrenberg in Ehrenberg, 1834) accepted as Entacmaea quadricolor (Leuckart in Rüppell & Leuckart, 1828) (additional source)
Gyrostoma quadricolor accepted as Entacmaea quadricolor (Leuckart in Rüppell & Leuckart, 1828) (additional source)
Halcampa Gosse, 1858 (additional source)
Halcampa capensis Carlgren, 1938 (additional source)
Halcampaster Carlgren, 1938 (additional source)
Halcampaster teres Carlgren, 1938 (additional source)
Halcampidae Andres, 1883 (additional source)
Halcurias McMurrich, 1893 (additional source)
Halcurias capensis Carlgren, 1928 (additional source)
Halcuriidae Carlgren, 1918 (1897) (additional source)
Halianthella Kwietniewski, 1896 (additional source)
Halianthella annularis Carlgren, 1938 (additional source)
Haloclava Verrill, 1899 (additional source)
Haloclava brevicornis (Stimpson, 1856) (additional source)
Haloclava capensis (Verrill, 1865) (additional source)
Haloclavidae Verrill, 1899 (additional source)
Heteractis aurora (Quoy & Gaimard, 1833) (additional source)
Heterodactyla Hemprich & Ehrenberg in Ehrenberg, 1834 (additional source)
Heterodactyla hemprichii Ehrenberg, 1834 (additional source)
Hormathiidae Carlgren, 1932 (additional source)
Isophelliidae accepted as Andvakiidae Danielssen, 1890 (additional source)
Macrodactyla Haddon, 1898 (additional source)
Megalactis Hemprich & Ehrenberg in Ehrenberg, 1834 (additional source)
Megalactis hemprichii Ehrenberg, 1834 (additional source)
Mesomyaria Stephenson, 1921 accepted as Actinostoloidea Carlgren, 1932 (additional source)
Metridiidae Carlgren, 1893 (additional source)
Metridium de Blainville, 1824 (additional source)
Metridium senile (Linnaeus, 1761) (additional source)
Nynantheae accepted as Enthemonae (additional source)
Peachia Gosse, 1855 (additional source)
Peachia koreni McMurrich, 1893 (additional source)
Phelliactis Simon, 1892 (additional source)
Phyllactis digitata (McMurrich, 1893) accepted as Actinostella digitata (McMurrich, 1893) (additional source)
Phyllactis praetexta (Couthouy in Dana, 1846) (additional source)
Phymactis Milne Edwards, 1857 (additional source)
Phymactis pustulata (Couthouy in Dana, 1846) (additional source)