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Cryptonatica affinis, Arctic moonsnail(s)

Cryptonatica affinis (Gmelin, 1791)

Invalid synonym: Cryptonatica clausa

• Modern species: Pleistocene - Present (2.6 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Gastropoda, order Littorinimorpha, family Naticidae, genus Cryptonatica

• Distribution
• Pleistocene: Hokkaido