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: Monotheca Nutting, 1900

Kingdom: Animalia
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- Occurrences: 1
genus: Euphysa Forbes, 1848

Kingdom: Animalia
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- Occurrences: 31
genus: Octotiara Kramp, 1953

Kingdom: Animalia
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genus: Oceania Péron & Lesueur, 1810

Kingdom: Animalia
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genus: Monostaechas Allman, 1877

Kingdom: Animalia
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- Occurrences: 3
genus: Gattya Allman, 1885

Kingdom: Animalia
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genus: Clausophyes Lens & van Riemsdijk, 1908

Kingdom: Animalia
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genus: Euphysilla Kramp, 1955

Kingdom: Animalia
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genus: Diphasia Agassiz, 1862

Kingdom: Animalia
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- Occurrences: 68
genus: Amphogona Browne, 1905

Kingdom: Animalia
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