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Cyrenidae gen. et sp. indet.

family Cyrenidae Gray, 1840

• Modern species: Cretaceous - Present
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Venerida

• Distribution
• Jurassic: Nagano?, Toyama, Gifu
• Jurassic-Cretaceous: Nagano, Ishikawa, Fukui, Gifu, Yamaguchi
• Cretaceous: Miyagi, Gunma, Saitama, Mie, Wakayama, Hiroshima
• Eocene: Hokkaido, Yamaguchi, Saga
• Miocene: Yamagata, Nagano, Toyama, Fukui, Gifu, Mie, Okayama, Hiroshima, Shimane, Saga
• Miocene-Pliocene: Nagano
• Pliocene: Hokkaido, Ehime
• Pliocene-Pleistocene: Nagano, Kanagawa, Shimane
• Pleistocene: Hokkaido, Aomori, Akita, Niigata, Ishikawa, Ibaraki, Tokyo, Chiba, Kanagawa, Shizuoka, Aichi, Shiga
• Holocene: Hokkaido, Toyama, Chiba
• Investigation in progress: Aichi

• Subtaxa
• Corbicula, genus
• Geloina, genus
• Polymesoda, genus
• Tetoria sanchuensis
• Tetoria yokoyamai