| Armiger crista |
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| Scientific classification |
| Domain: |
Eukaryota |
| Kingdom: |
Animalia |
| Phylum: |
Mollusca |
| Class: |
Gastropoda |
| Superorder: |
Hygrophila |
| Family: |
Planorbidae |
| Genus: |
Armiger |
| Species: |
A. crista |
| Binomial name |
Armiger crista
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| Synonyms |
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.