• Anactinia carlgreni Nair, 1949
• Anactinia indiana (Bamford, 1912)
• Anactinia pelagica Annandale, 1909
• Anactinia superficialis (Bamford, 1912)
• Angianthula bargmannae Leloup, 1964
• Angianthula cerfontaini Leloup, 1968
• Anthoactis armauerhanseni Leloup, 1932
• Anthoactis armauer-hanseni Leloup, 1932 accepted as Anthoactis armauerhanseni Leloup, 1932
• Anthoactis australiae Carlgren, 1937
• Anthoactis benedeni Leloup, 1932
• Apiactis bengalensis Panikkar, 1936
• Apiactis denticulata Beneden, 1897
• Apiactis obconica McMurrich, 1910 accepted as Isapiactis obconica (McMurrich, 1910)
• Apiactis tentaculata Leloup, 1942
• Arachnactis albida Sars, 1846
• Arachnactis bournei Fowler, 1897 accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859)
• Arachnactis brachiolata A. Agassiz, 1863 accepted as Synarachnactis brachiolata (A. Agassiz, 1863)
• Arachnactis indica Panikkar, 1947
• Arachnactis lloydii (Gosse, 1859) accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859)
• Arachnactis lobiancoi Carlgren, 1912 accepted as Isarachnactis lobiancoi (Carlgren, 1912)
• Arachnactis panikkari Nair, 1949
• Arachnactis sibogae McMurrich, 1910
• Arachnactis valdiviae Carlgren, 1924
• Arachnanthus australiae Carlgren, 1937
• Arachnanthus bockii Carlgren, 1922
• Arachnanthus errans Lopes, Scarabino, Carranza, Muñoz, Morandini, Nagata & Stampar, 2023
• Arachnanthus lilith Stampar & El Didi, 2018
• Arachnanthus nocturnus den Hartog, 1977 accepted as Isarachnanthus nocturnus (Hartog, 1977)
• Arachnanthus oligopodus (Cerfontaine, 1891)
• Arachnanthus sarsi Carlgren, 1912
• Atractanthula johni Leloup, 1964
• Botracnidifer norvegicus Carlgren, 1912 accepted as Botrucnidifer norvegicus Carlgren, 1912
• Botruanthus benedeni (Torrey & Kleeberger, 1909)
• Botruanthus mexicanus Stampar, González-Muñoz & Morandini, 2016
• Botrucnidiata damasi Leloup, 1932
• Botrucnidifer norvegicus Carlgren, 1912
• Botrucnidifer shtokmani Molodtsova, 2001
• Bursanthus bamfordi Leloup, 1968
• Calpanthula guinensis Van Beneden, 1897
• Ceriantheomorphe adelita Lopes, Morandini & Stampar in Lopes et al., 2019
• Ceriantheomorphe ambonensis (Kwietniewski, 1898)
• Ceriantheomorphe brasiliensis (Mello-Leitão, 1919)
• Ceriantheomorphe brasiliensis Carlgren, 1931 accepted as Ceriantheomorphe brasiliensis (Mello-Leitão, 1919)
• Ceriantheopsis americana (Agassiz in Verrill, 1864)
• Ceriantheopsis austroafricanus Molodtsova, Griffiths & Acuña, 2011
• Ceriantheopsis lineata Stampar, Scarabino, Pastorino & Morandini, 2015
• Ceriantheopsis microbotanica Stampar, Mills & Keable, 2020
• Ceriantheopsis nikitai Molodtsova, 2001
• Ceriantheopsis zealandiaensis Stampar, Mills & Keable, 2020
• Cerianthula atlantica Carlgren, 1931 (accepted > unreplaced junior homonym)
• Cerianthula atlantica Van Beneden, 1924
• Cerianthula benguelaensis Leloup, 1964
• Cerianthula braemi Carlgren, 1924
• Cerianthula canariensis Carlgren, 1924
• Cerianthula carlgreni Calabresi, 1927
• Cerianthula lauriei Leloup, 1964
• Cerianthula mediterranea Beneden, 1897
• Cerianthula melo (Van Beneden, 1897)
• Cerianthula michaelsarsi Carlgren, 1924
• Cerianthula multiseptata Leloup, 1964
• Cerianthula ommanneyi Leloup, 1964
• Cerianthula polybotrucnidiata Leloup, 1964
• Cerianthula rayneri Leloup, 1964
• Cerianthula sennai Calabresi, 1927 accepted as Gymnanthula sennai (Calabresi, 1927)
• Cerianthula spinifer (van Beneden, 1897)
• Cerianthus abyssorum Danielssen, 1890 accepted as Cerianthus vogti Danielssen, 1890
• Cerianthus actinioideus Delle Chiaje, 1841 accepted as Cerianthus membranaceus (Gmelin, 1791)
• Cerianthus actinoides (uncertain > nomen dubium)
• Cerianthus aestuari Torrey & Kleeberger, 1909 accepted as Pachycerianthus aestuari (Torrey & Kleeburger, 1909)
• Cerianthus aestuarii Torrey & Kleeberger, 1909 accepted as Pachycerianthus aestuari (Torrey & Kleeburger, 1909)
• Cerianthus amaricanus (uncertain > nomen dubium)
• Cerianthus ambonensis Kwietniewski, 1898 accepted as Ceriantheomorphe ambonensis (Kwietniewski, 1898)
• Cerianthus americanus Agassiz in Verrill, 1864 accepted as Ceriantheopsis americana (Agassiz in Verrill, 1864)
• Cerianthus andamanensis Alcock, 1893 (uncertain > taxon inquirendum)
• Cerianthus aquitanicus (uncertain > nomen dubium)
• Cerianthus bathymetricus Moseley, 1877
• Cerianthus benedeni Torrey & Kleeberger, 1909 accepted as Botruanthus benedeni (Torrey & Kleeberger, 1909)
• Cerianthus bicyclus Torelli, 1961 accepted as Arachnanthus oligopodus (Cerfontaine, 1891)
• Cerianthus borealis Danielssen, 1860 accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859)
• Cerianthus borealis Verrill, 1873 accepted as Pachycerianthus borealis (Verrill, 1873)
• Cerianthus brachysoma Cerfontaine, 1891 (uncertain > taxon inquirendum)
• Cerianthus brasiliensis Mello-Leitão, 1919 accepted as Ceriantheomorphe brasiliensis (Mello-Leitão, 1919)
• Cerianthus brerae Delle Chiaje, 1841 accepted as Pachycerianthus solitarius (Rapp, 1829)
• Cerianthus cornucopia Delle Chiaje, 1841 accepted as Cerianthus membranaceus (Gmelin, 1791)
• Cerianthus cylindricus (Renier, 1807) accepted as Cerianthus membranaceus (Gmelin, 1791)
• Cerianthus danielseni (uncertain > nomen dubium)
• Cerianthus danielsseni Levinsen accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859)
• Cerianthus dohrni van Beneden, 1924 accepted as Pachycerianthus dohrni (van Beneden, 1924)
• Cerianthus dohrnii Beneden, 1924 accepted as Pachycerianthus dohrni (van Beneden, 1924)
• Cerianthus elongatus Kwietniewski, 1898 accepted as Pachycerianthus fimbriatus McMurrich, 1910
• Cerianthus filiformis Carlgren, 1922
• Cerianthus incertus Carlgren, 1932
• Cerianthus japonicus Carlgren, 1922
• Cerianthus johnsoni Torrey & Kleeburger, 1909 accepted as Pachycerianthus johnsoni (Torrey & Kleeburger, 1909)
• Cerianthus lloydi Gosse, 1859 accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859)
• Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859)
• Cerianthus lloydii borealis Danielssen, 1860 accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859)
• Cerianthus loydii Gosse, 1859 accepted as Cerianthus lloydii Gosse, 1859 accepted as Synarachnactis lloydii (Gosse, 1859)
• Cerianthus lûtkeni (uncertain > nomen dubium)
• Cerianthus lütkeni (uncertain > nomen dubium)