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Trisidos sp.

genus Trisidos Röding, 1798

• Modern species: Oligocene - Present (28.4 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Arcoida, family Arcidae

• Distribution
• Miocene: Ishikawa
• Pleistocene: Ishikawa, Aichi

• Subtaxa
• T. kiyonoi, Japanese propellor ark