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Trigonia sp.

genus Trigonia Bruguière, 1789

• Extinct species: early Permian - early Eocene (298.9 - 55.8 Ma)
• Habitat: Shallow marine

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

• Distribution
• Triassic: Miyagi
• Jurassic: Miyagi, Nagano, Fukui, Kyoto, Wakayama, Tokushima
• Jurassic-Cretaceous: Nagano
• Cretaceous: Hokkaido, Miyagi, Fukushima, Nagano, Gunma, Chiba, Shizuoka, Mie, Tokushima, Ehime

• Subtaxa
• T. senex
• T. sumiyagura