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Cryptopecten sp.

genus Cryptopecten Dall, Bartsch and Rehder, 1938

• Modern species: late Miocene - Present (11.6 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Pectinida, family Pectinidae

• Distribution
• Miocene: Tochigi
• Miocene-Pliocene: Shizuoka
• Pliocene: Niigata, Kanagawa
• Pliocene-Pleistocene: Kanagawa
• Pleistocene: Niigata, Chiba, Kanagawa, Shizuoka

• Subtaxa
• C. nux subsp. sematensis
• C. vesiculosus
• C. yanagawaensis