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Cyclocardia sp.

genus Cyclocardia Conrad, 1867

• Modern species: Late Cretaceous - Present (99.7 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Carditida, family Carditidae

• Distribution
• Paleogene: Hokkaido
• Oligocene: Fukushima
• Miocene: Miyagi, Tochigi, Ibaraki, Aichi, Gifu, Mie, Shiga, Kyoto, Kagawa
• Miocene-Pliocene: Nagano
• Pliocene: Hokkaido, Niigata
• Pleistocene: Hokkaido, Tokyo
• Holocene: Saitama
• Investigation in progress: Saitama (Miocene?)

• Subtaxa
• C. akagii
• C. crassidens
• C. crebricostata
• C. elliptica
• C. isaotakii
• C. laxata
• C. myogadaniensis
• C. ochiaiensis
• C. siogamensis
• C. tokunagai