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Spisula sp.

genus Spisula Gray, 1837

Invalid synonym: Pseudocardium

• Modern species: Paleocene - Present (61.7 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, family Mactridae

• Distribution
• Miocene: Hokkaido, Nagano, Saitama
• Miocene-Pliocene: Nagano
• Pliocene: Hokkaido, Miyagi, Niigata
• Pleistocene: Hokkaido, Ibaraki, Chiba, Kanagawa
• Investigation in progress: Nagano, Saitama (Miocene?)

• Subtaxa
• S. onnechiuria
• S. sachalinensis
• S. voyi
• S. yokoyamai