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Atrina sp.

genus Atrina Gray, 184

• Modern species: Middle Triassic - Present (242.0 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Ostreida, family Pinnidae

• Distribution
• Cretaceous: Iwate
• Miocene: Tottori
• Pleistocene: Ibaraki, Tokyo

• Subtaxa
• A. japonica
• A. pectinata, Comb pen shell