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Mercenaria sp.

genus Mercenaria Schumacher, 1817

• Modern species: early Miocene - Present (23.0 - 0.0 Ma)
• Habitat: Marine

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

• Distribution
• Paleogene-Neogene: Nagano
• Miocene: Akita, Miyagi, Fukushima, Gunma, Tochigi, Kanagawa, Shimane
• Miocene-Pliocene: Nagano, Kanagawa
• Pliocene: Hokkaido, Aomori, Niigata, Nagano, Tokyo, Chiba, Shizuoka
• Pliocene-Pleistocene: Niigata, Kanagawa
• Pleistocene: Yamagata, Ishikawa, Ibaraki, Tokyo, Chiba, Kanagawa
• Holocene: Saitama

• Subtaxa
• M. chitaniana
• M. sigaramiensis
• M. stimpsoni, Stimpson's hard clam
• M. yokoyamai