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Kingdom Animalia |
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Acaulidae -- valid |
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Actinulida Swedmark and Teissier, 1958 -- valid |
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Anthoathecatae -- valid -- athecate hydroids, hydromedusae |
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Armorhydridae Swedmark and Teissier, 1958 -- valid |
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Balellidae Stechow, 1922 -- valid |
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Bougainvilliidae Lütken, 1850 -- valid |
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Bythocellata Nair, 1951 -- valid |
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Bythotiara Günther, 1903 -- valid |
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Bythotiaridae Maas, 1905 -- valid |
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Calycophorae -- valid |
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Calycopsis Fewkes, 1882 -- valid |
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Candelabridae Stechow, 1921 -- valid |
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Capitata Kühn, 1913 -- valid |
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Cladocorynidae Allman, 1872 -- valid |
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Cladonematidae Gegenbaur, 1857 -- valid |
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Corymorphidae Allman, 1872 -- valid |
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Corynidae Johnston, 1836 -- valid |
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Cystonectae -- valid |
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Cytaeididae L. Agassiz, 1862 -- valid |
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Eudendriidae -- valid |
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Eumedusa Bigelow, 1920 -- valid |
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Filifera Kühn, 1913 -- valid |
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Halammohydridae Remane, 1927 -- valid |
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Halimedusidae Arai and Brinckmann-Voss, 1980 -- valid |
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Heterotiara Maas, 1905 -- valid |
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Hydractiniidae L. Agassiz, 1862 -- valid |
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Hydridae -- valid |
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Hydrocorynidae Rees, 1957 -- valid |
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Kanaka Uchida, 1947 -- valid |
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Leptothecatae -- valid -- thecate hydroids, hydromedusae |
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Limnocnididae -- invalid |
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Limnomedusae Kramp, 1938 -- valid |
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Margelopsidae Uchida, 1927 -- valid |
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Milleporidae Fleming, 1828 -- valid -- fire corals |
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Moerisiidae Poche, 1914 -- valid |
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Narcomedusae Haeckel, 1879 -- valid |
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Oceania Péron and Lesueur, 1810 -- valid |
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Oceanidae Eschscholtz, 1829 -- valid |
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Otohydridae Swedmark and Teissier, 1958 -- valid |
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Pachycordyle Weismann, 1883 -- valid |
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Pandeidae Haeckel, 1879 -- valid |
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Pennaria Goldfuss, 1820 -- valid |
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Pennariidae McCrady, 1859 -- valid |
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Physonectae -- valid |
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Polyorchidae Agassiz, 1862 -- valid |
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Polypodiidae -- valid |
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Porpitidae Goldfuss, 1818 -- valid |
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Proboscidactylidae Hand and Hendrickson, 1950 -- valid |
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Protohydridae -- valid |
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Rathkeidae Russell, 1953 -- valid |
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Russelliidae Kramp, 1957 -- valid |
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Sibogita Maas, 1905 -- valid |
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Siphonophorae -- valid -- siphonophores |
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Solanderiidae Marshall, 1892 -- valid |
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Sphaerocorynidae Prévot, 1959 -- valid |
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Tetraplatidae -- valid |
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Trichydridae Hincks, 1868 -- valid |
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Tubulariidae Fleming, 1828 -- valid |
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Zancleidae Russell, 1953 -- valid |
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Zancleopsidae Bouillon, 1978 -- valid |
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