Aeginidae Gegenbaur, 1857 (basis of record)
Amphisbetia L. Agassiz, 1862 (additional source)
Amphisbetia operculata (Linnaeus, 1758) (additional source)
Anthoathecata (basis of record)
Bougainvillia Lesson, 1830 (additional source)
Bougainvilliidae Lütken, 1850 (basis of record)
Campanulariidae Johnston, 1836 (basis of record)
Capitata (basis of record)
Cladonematidae Gegenbaur, 1857 (basis of record)
Clytia Lamouroux, 1812 (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)
Eleutheriidae Russell, 1953 accepted as Cladonematidae Gegenbaur, 1857 (basis of record)
Euphysidae Haeckel, 1879 accepted as Corymorphidae Allman, 1872 (basis of record)
Filifera (basis of record)
Haleciidae Hincks, 1868 (basis of record)
Hydractinia Van Beneden, 1844 (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)
Limnomedusae (basis of record)
Margelina Haeckel, 1879 (basis of record)
Margelopsidae Mayer, 1910 (basis of record)
Margelopsis Hartlaub, 1897 (additional source)
Mitrocomidae Haeckel, 1879 (basis of record)
Modeeria Forbes, 1848 (additional source)
Narcomedusae (basis of record)
Obelia Péron & Lesueur, 1810 (additional source)
Obelia longissima (Pallas, 1766) (additional source)
Olindiasidae Haeckel, 1879 accepted as Olindiidae Haeckel, 1879 (basis of record)
Orthopyxis L. Agassiz, 1862 (additional source)
Pandeida (basis of record)
Phialella Browne, 1902 (additional source)
Phialellidae Russell, 1953 (basis of record)
Proboscoida accepted as Leptothecata (basis of record)
Protiaridae Haeckel, 1879 (basis of record)
Ptychogastriidae Mayer, 1910 (basis of record)
Rathkea Brandt, 1837 (additional source)
Rathkeidae Russell, 1953 (basis of record)
Rhopalonematidae Russell, 1953 (basis of record)
Sarsia Lesson, 1843 (additional source)
Sarsia tubulosa (M. Sars, 1835) (additional source)
Sertularia Linnaeus, 1758 (additional source)
Sertulariidae Lamouroux, 1812 (basis of record)
Tiarannidae Russell, 1940 (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)
Zancleida Russell, 1953 (basis of record)
Zancleidae Russell, 1953 (basis of record)