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: Eisenackiella Taylor, 1988

Kingdom: Animalia
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genus: Niobia Mayer, 1900

Kingdom: Animalia
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genus: Kerunia Mayer-Eymar, 1900

Kingdom: Animalia
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- Occurrences: 19
genus: Heterastridium Reuss, 1865

Kingdom: Animalia
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genus: Heteropyramis Moser, 1925

Kingdom: Animalia
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genus: Gonionemus A.Agassiz, 1862

Kingdom: Animalia
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- Occurrences: 54
genus: Trichydra Wright, 1858

Kingdom: Animalia
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genus: Pectis Haeckel, 1879

Kingdom: Animalia
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genus: Balella Stechow, 1919

Kingdom: Animalia
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- Occurrences: 3
genus: Stephanophyes Chun, 1888

Kingdom: Animalia
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