| Siphonophorida Hoffman, 1980 (Order) |
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| Siphonophoridae Newport, 1844 (Family) |
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| Annamnium Verhoeff, 1941 (Genus) |
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| Bactrois Cook, 1895 (Genus) |
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| Balizonium Verhoeff, 1941 (Genus) |
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| Californizonium Verhoeff, 1941 (Genus) |
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| Chamberlinium Verhoeff, 1941 (Genus) |
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| Columbianum Verhoeff, 1941 (Genus) |
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| Columbiozonium Verhoeff, 1941 (Genus) |
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| Cordillerium Verhoeff, 1941 (Genus) |
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| Gonatotrichus Attems, 1951 (Genus) |
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| Guatemalium Verhoeff, 1941 (Genus) |
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| Linozonium Attems, 1951 (Genus) |
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| Lomboknium Jeekel, 2000 (Genus) |
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| Lomboknium Verhoeff, 1941 (Genus) |
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| Okeanozonium Verhoeff, 1941 (Genus) |
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| Pterozonium Attems, 1951 (Genus) |
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| Rhinosiphora Verhoeff, 1924 (Genus) |
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| Siphonacme Cook & Loomis, 1928 (Genus) |
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| Siphonocybe Pocock, 1903 (Genus) |
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| Siphonophora Brandt, 1837 (Genus) |
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| Siphonophorella Attems, 1951 (Genus) |
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| Yukatanium Verhoeff, 1941 (Genus) |
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