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Eumetazoa (metazoans)
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Bilateria (bilaterally symmetrical animals)
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Deuterostomia (deuterostomes)
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Craniata (craniates)
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Euteleostomi (bony vertebrates)
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Tetrapoda (tetrapods)
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Amniota (amniotes)
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Order Squamata
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Family Hydrophiidae
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Genus Acalyptophis
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Genus Acanthophis
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Genus Aipysurus
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Genus Aspidomorphus
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Genus Astrotia
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Genus Austrelaps
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Genus Cacophis
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Genus Demansia
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Genus Denisonia
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Genus Disteira
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Genus Drysdalia
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Genus Echiopsis
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Genus Elapognathus
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Genus Emydocephalus
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Genus Enhydrina
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Genus Ephalophis
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Genus Furina
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Genus Hemiaspis
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Genus Hoplocephalus
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Genus Hydrelaps
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Genus Hydrophis
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Genus Kerilia
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Genus Kolpophis
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Genus Lapemis
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Genus Laticauda
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Genus Loveridgelaps
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Genus Microcephalophis
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Genus Micropechis
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Genus Notechis
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Genus Ogmodon
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Genus Oxyuranus
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Genus Parahydrophis
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Genus Parapistocalamus
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Genus Pelamis
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Genus Praescutata
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Genus Pseudechis
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Genus Pseudolaticauda
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Genus Pseudonaja
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Genus Rhinoplocephalus
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Genus Salomonelaps
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Genus Simoselaps
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Genus Suta
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Genus Thalassophis
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Genus Toxicocalamus
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Genus Tropidechis
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Genus Vermicella
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