| Armiger crista
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| Scientific classification
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| Kingdom:
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Animalia
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| Phylum:
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Mollusca
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| Class:
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Gastropoda
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| Superorder:
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Hygrophila
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| Family:
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Planorbidae
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| Genus:
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Armiger
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| Species:
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A. crista
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| Binomial name
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Armiger crista
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| Synonyms
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List
- Armiger exigua A. B. Leonard, 1972
- Gyraulus (Armiger) crista (Linnaeus, 1758)
- Gyraulus crista (Linnaeus, 1758)
- Nautilus crista Linnaeus, 1758
- Planorbis (Armiger) crista (Linnaeus, 1758)
- Planorbis (Armiger) crista var. inermis Lindholm, 1926
- Planorbis (Armiger) gedyminensis B. Dybowski & Grochmalicki, 1922
- Planorbis (Armiger) jagellonensis B. Dybowski & Grochmalicki, 1922
- Planorbis (Armiger) nautileus (Linnaeus, 1767)
- Planorbis (Armiger) paravitoldianus B. Dybowski & Grochmalicki, 1922
- Planorbis (Armiger) sobeskianus B. Dybowski & Grochmalicki, 1922
- Planorbis (Armiger) vitoldianus B. Dybowski & Grochmalicki, 1922
- Planorbis (Gyraulus) crista (Linnaeus, 1758)
- Planorbis (Gyraulus) crista var. spinulosus Clessin, 1884
- Planorbis crista (Linnaeus, 1758)
- Planorbis cristatus Draparnaud, 1805
- Planorbis imbricatus O. F. Müller, 1774
- Planorbis nautileus (Linnaeus, 1767)
- Planorbis paladilhi Moitessier, 1867
- Turbo nautileus Linnaeus, 1767
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Armiger crista, commonly known as the Nautilus ramshorn, is a minute species of freshwater snail, an aquatic pulmonate gastropod mollusk in the family Planorbidae, the ram's horn snails.