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Modiolus sp., Horsemussel(s)

genus Modiolus Lamarck, 1799

Invalid synonym: Volsella sp.

• Modern species: Early Devonian - Present (409.1 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Mytilida, family Mytilidae

• Distribution
• Triassic: Okayama
• Jurassic-Cretaceous: Gifu
• Miocene: Nagano, Gifu, Mie, Shimane
• Pliocene: Niigata
• Pliocene-Pleistocene: Niigata
• Pleistocene: Niigata, Ishikawa, Tokyo, Chiba
• Holocene: Chiba

• Subtaxa
• M. arakawensis
• M. kurilensis
• M. maedae
• M. margaritaceus