Aeginidae Gegenbaur, 1857 (basis of record)
Aglantha Haeckel, 1879 (additional source)
Aglaopheniidae Marktanner-Turneretscher, 1890 (basis of record)
Amphisbetia L. Agassiz, 1862 (additional source)
Anthoathecata (basis of record)
Bougainvillia Lesson, 1830 (additional source)
Bougainvillia muscus (Allman, 1863) (additional source)
Bougainvilliidae Lütken, 1850 (basis of record)
Campanulariidae Johnston, 1836 (basis of record)
Capitata (basis of record)
Clavidae McCrady, 1859 accepted as Hydractiniidae L. Agassiz, 1862 (basis of record)
Clytia Lamouroux, 1812 (additional source)
Clytia gracilis (M. Sars, 1851) (additional source)
Clytia hemisphaerica (Linnaeus, 1767) (additional source)
Clytia paulensis (Vanhöffen, 1910) (additional source)
Conica accepted as Leptothecata (basis of record)
Corymorpha M. Sars, 1835 (additional source)
Corymorphidae Allman, 1872 (basis of record)
Corynidae Johnston, 1836 (basis of record)
Ectopleura L. Agassiz, 1862 (additional source)
Eirene Eschscholtz, 1829 (additional source)
Eirenidae Haeckel, 1879 (basis of record)
Eucheilota McCrady, 1859 (additional source)
Eutima McCrady, 1859 (additional source)
Filifera (basis of record)
Geryoniidae Eschscholtz, 1829 (basis of record)
Gossea L. Agassiz, 1862 accepted as Octobulbacea Zamponi, 1983 (additional source)
Gymnangium Hincks, 1874 (additional source)
Haleciidae Hincks, 1868 (basis of record)
Hydractinia Van Beneden, 1844 (additional source)
Hydractinia carnea (M. Sars, 1846) accepted as Podocoryna carnea M. Sars, 1846 (additional source)
Hydractiniidae L. Agassiz, 1862 (basis of record)
Hydroidolina (basis of record)
Lafoeidae Hincks, 1868 (basis of record)
Laodicea Lesson, 1843 (additional source)
Laodicea undulata (Forbes & Goodsir, 1853) (additional source)
Laodiceidae Agassiz, 1862 (basis of record)
Leptothecata (basis of record)
Leuckartiara Hartlaub, 1914 (additional source)
Leuckartiara octona (Fleming, 1823) (additional source)
Limnomedusae (basis of record)
Lovenella Hincks, 1868 (additional source)
Margelina Haeckel, 1879 (basis of record)
Mitrocomidae Haeckel, 1879 (basis of record)
Narcomedusae (basis of record)
Obelia Péron & Lesueur, 1810 (additional source)
Obelia dichotoma (Linnaeus, 1758) (additional source)
Oceania Péron & Lesueur, 1810 (additional source)
Olindiasidae Haeckel, 1879 accepted as Olindiidae Haeckel, 1879 (basis of record)
Orthopyxis L. Agassiz, 1862 (additional source)
Orthopyxis integra (MacGillivray, 1842) (additional source)
Pandeida (basis of record)
Pennariidae McCrady, 1859 (basis of record)
Phialella Browne, 1902 (additional source)
Phialella quadrata (Forbes, 1848) (additional source)
Phialellidae Russell, 1953 (basis of record)
Phialuciidae Kramp, 1955 (basis of record)
Porpitidae Goldfuss, 1818 (basis of record)
Proboscoida accepted as Leptothecata (basis of record)
Protiaridae Haeckel, 1879 (basis of record)
Rathkeidae Russell, 1953 (basis of record)
Rhopalonematidae Russell, 1953 (basis of record)
Sertularia Linnaeus, 1758 (additional source)
Sertulariidae Lamouroux, 1812 (basis of record)
Sphaerocorynida Petersen, 1990 (basis of record)
Sphaerocorynidae Prévot, 1959 (basis of record)
Trachylinae (basis of record)
Trachymedusae (basis of record)
Tubulariida accepted as Tubulariidae Goldfuss, 1818 (basis of record)
Tubulariidae Goldfuss, 1818 (basis of record)
Turritopsis McCrady, 1857 (additional source)
Turritopsis nutricula McCrady, 1857 (additional source)
Velella Lamarck, 1801 (additional source)
Velella velella (Linnaeus, 1758) (additional source)
Zancleida Russell, 1953 (basis of record)
Zancleidae Russell, 1953 (basis of record)