Search for class Hydrozoa returned 6,137 results.

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Species (4,503)
Unranked (777)
Genus (627)
Family (161)
Subspecies (45)

Form (11)
Order (7)
Variety (6)

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genus: Tetracanna Goy, 1979

Kingdom: Animalia
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genus: Bythotiara Günther, 1903

Kingdom: Animalia
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genus: Margalefia Pagès, Bouillon & Gili, 1991

Kingdom: Animalia
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genus: Mesodendriurn Waggoner & Langer, 1993

Kingdom: Animalia
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genus: Melicertissa Haeckel, 1879

Kingdom: Animalia
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genus: Prayola Carré C., 1969

Kingdom: Animalia
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genus: Helgicirrha Hartlaub, 1909

Kingdom: Animalia
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- Occurrences: 5
genus: Bouillonia Petersen, 1990

Kingdom: Animalia
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- Occurrences: 2
genus: Colobonema Vanhöffen, 1902

Kingdom: Animalia
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genus: Symplectoscyphus Marktanner-Turneretscher, 1890

Kingdom: Animalia
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- Occurrences: 156

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