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Megayoldia sp.

genus Megayoldia Verrill and Bush, 1897

• Modern species: Paleocene - Present (66.0 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Nuculanoida, family Yoldiidae

• Distribution
• Miocene: Hokkaido, Nagano, Saitama, Aichi, Gifu, Tottori
• Miocene-Pliocene: Hokkaido
• Pliocene: Akita, Niigata, Ibaraki
• Pleistocene: Niigata
• Investigation in progress: Saitama (Miocene?)

• Subtaxa
• M. japonica
• M. lischkei
• M. thraciaeformis
• M. toyamaensis