Alcinoe Rang, 1828 accepted as Mnemiopsis L. Agassiz, 1860 (additional source)
Alcinoe rosea Mertens, 1833 accepted as Mnemiopsis leidyi A. Agassiz, 1865 (additional source)
Alcinoe vermicularis Rang, 1828 accepted as Alcinoe vermiculata Rang, 1828 accepted as Mnemiopsis leidyi A. Agassiz, 1865 (additional source)
Aulacoctena Mortensen, 1913 (additional source)
Aulacoctena acuminata Mortensen, 1913 (additional source)
Aulacoctenidae Lindsay & Miyake, 2007 (additional source)
Bathocyroe Madin & Harbison, 1978 (additional source)
Bathocyroe fosteri Madin & Harbison, 1978 (additional source)
Bathocyroe paragaster (Ralph & Kaberry, 1950) (additional source)
Bathocyroidae Harbison & Madin, 1982 (additional source)
Bathyctena Mortensen, 1912 (additional source)
Bathyctena chuni (Moser, 1909) (additional source)
Bathyctena latipharyngea (Dawydoff, 1946) (additional source)
Bathyctenidae Mortensen, 1913 (additional source)
Beroe Browne, 1756 accepted as Beroe O.F. Müller, 1776 (additional source)
Beroe (Cydalisia) mitraeformis Lesson, 1829 represented as Beroe mitraeformis Lesson, 1829 (additional source)
Beroe abyssicola Mortensen, 1927 (additional source)
Beroe australis A. Agassiz & Mayer, 1899 (additional source)
Beroe baffini Kramp, 1942 (additional source)
Beroe campana Komai, 1918 (additional source)
Beroe compacta Moser, 1909 (additional source)
Beroe constricta Chamisso & Eysenhardt, 1821 (additional source)
Beroe cucumis Fabricius, 1780 (additional source)
Beroe flemingii (Eschscholtz, 1829) (additional source)
Beroe forskalii Milne Edwards, 1841 (additional source)
Beroe gilva Eschscholtz, 1829 accepted as Beroe ovatus Bruguière, 1789 accepted as Beroe ovata Bruguière, 1789 (additional source)
Beroe gracilis Künne, 1939 (additional source)
Beroe hexagonus Bruguière, 1789 accepted as Callianira hexagona (Bruguière, 1789) (basis of record)
Beroe hyalina Moser, 1907 (additional source)
Beroe macrostomus Péron & Lesueur, 1807 (additional source)
Beroe mitrata (Moser, 1907) (additional source)
Beroe ovatus Bruguière, 1789 accepted as Beroe ovata Bruguière, 1789 (additional source)
Beroe ovum Fabricius, 1780 accepted as Mertensia ovum (Fabricius, 1780) (basis of record)
Beroe pandorina Moser, 1903 (additional source)
Beroe penicillata (Mertens, 1833) (additional source)
Beroe ramosa Komai, 1921 (additional source)
Beroe roseus Quoy & Gaimard, 1824 (additional source)
Beroe rufescens (Eschscholtz, 1829) (additional source)
Beroida (additional source)
Beroidae Eschscholtz, 1825 (additional source)
Bolinopsidae Bigelow, 1912 (additional source)
Bolinopsis L. Agassiz, 1860 (additional source)
Bolinopsis chuni (von Lendenfeld, 1884) (additional source)
Bolinopsis elegans (Mertens, 1833) (additional source)
Bolinopsis indosinensis Dawydoff, 1946 (additional source)
Bolinopsis infundibulum (O.F. Müller, 1776) (additional source)
Bolinopsis mikado (Moser, 1907) (additional source)
Bolinopsis ovalis (Bigelow, 1904) (additional source)
Bolinopsis rubripunctata Tokioka, 1964 (additional source)
Bolinopsis vitrea (L. Agassiz, 1860) (additional source)
Callianira antarctica Chun, 1897 (additional source)
Callianira bialata Delle Chiaje, 1841 (additional source)
Callianira cristata Moser, 1909 (additional source)
Callianira diploptera Lamarck, 1816 (additional source)
Callianira ficalbi Curreri, 1900 (additional source)
Callianira hexagona (Bruguière, 1789) (basis of record)
Callianira hexagona Slabber, 1778 accepted as Callianira slabberi De Haan, 1827 accepted as Pleurobrachia pileus (O. F. Müller, 1776) (additional source)
Callianira triploptera Lamarck, 1816 (additional source)
Cambodgia Dawydoff, 1946 (additional source)
Cambodgia elegantissima Dawydoff, 1946 (additional source)
Cambojiida (basis of record)
Cambojiidae Ospovat, 1985 (basis of record)
Ceroctena C. Carré & D. Carré, 1991 accepted as Attenboroughctena Ceccolini & Cianferoni, 2020 (additional source)
Ceroctena bicornis C. Carré & D. Carré, 1991 accepted as Attenboroughctena bicornis (C. Carré & D. Carré, 1991) (additional source)
Cestida (basis of record)
Cestidae Gegenbaur, 1856 (additional source)
Cestum Lesueur, 1813 (additional source)
Cestum veneris Lesueur, 1813 (additional source)
Charistephane Chun, 1879 (additional source)
Charistephane fugiens Chun, 1879 (additional source)
Chlorella Stechow, 1921 accepted as Haeckelia Carus, 1863 (basis of record)
Coeloplana Kowalevsky, 1880 (additional source)
Coeloplana (Benthoplana) Fricke & Plante, 1971 (basis of record)
Coeloplana (Benthoplana) meteoris Thiel, 1968 represented as Coeloplana meteoris Thiel, 1968 (basis of record)
Coeloplana agniae Dawydoff, 1930 (additional source)
Coeloplana astericola Mortensen, 1927 (additional source)
Coeloplana bannwarthii Krumbach, 1933 (additional source)
Coeloplana bocki Komai, 1920 (additional source)
Coeloplana duboscqui Dawydoff, 1930 (additional source)
Coeloplana echinicola Tanaka, 1932 (additional source)
Coeloplana gonoctena Krempf, 1921 (additional source)
Coeloplana indica Devanesen & Varadarajan, 1942 (additional source)
Coeloplana komaii Utinomi, 1963 (additional source)
Coeloplana krusadiensis Devanesen & Varadarajan, 1942 (additional source)
Coeloplana lineolata Fricke, 1970 (additional source)
Coeloplana mesnili Dawydoff, 1938 (additional source)
Coeloplana meteoris Thiel, 1968 (additional source)
Coeloplana metschnikowii Kowalevsky, 1880 (additional source)
Coeloplana mitsukurii Abbott, 1902 (additional source)
Coeloplana perrieri Dawydoff, 1930 (additional source)
Coeloplana punctata Fricke, 1970 (additional source)
Coeloplana scaberiae Matsumoto & Gowlett-Holmes, 1996 (additional source)
Coeloplana sophiae Dawydoff, 1938 (additional source)
Coeloplana tattersalli Devanesen & Varadarajan, 1942 (additional source)
Coeloplana thomsoni Matsumoto, 1999 (additional source)
Coeloplana weilli Dawydoff, 1938 (additional source)
Coeloplana willeyi Abbott, 1902 (additional source)
Coeloplana wuennenbergi Fricke, 1970 (additional source)
Coeloplanidae Willey, 1896 (additional source)
Cryptocoda Leloup, 1938 (additional source)