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Cyclocardia tokunagai

Cyclocardia tokunagai Yokoyama, 1924

Invalid synonym: Venericardia (Cyclocardia) tokunagai, Venericardia tokunagai

• Extinct species: Oligocene - Miocene (28.4 - 5.3 Ma)
• Habitat: Marine

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

• Distribution
• Oligocene: Fukushima
• Investigation in progress: Saitama (Miocene?)