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Pterotrigonia sp.

genus Pterotrigonia van Hoepen, 1929

• Extinct species: Middle Jurassic - Cretaceous (164.7 - 66.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Trigoniida, family Pterotrigoniidae

• Distribution
• Cretaceous: Hokkaido, Iwate, Gunma, Saitama, Chiba, Tokushima, Ehime

• Subtaxa
• P. hokkaidoana
• P. pocilliformis