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Magallana gigas, Pacific oyster(s)

Magallana gigas (Thunberg, 1793)

Genus was changed in 2016.

Synonym: Japanese oyster, Miyagi oyster

Invalid synonym: Ostrea gigas, Ostrea gravitesta, Crassostrea gigas

Invalid synonym?: Crassostrea gravitesta, , Ostrea (Crassostrea) gravitesta

• Modern species: middle Miocene - Present (13.7 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Ostreida, superfamily Ostreoidea, family Ostreidae, genus Magallana

• Distribution
• Cretaceous: Wakayama
• Oligocene: Iwate
• Neogene: Hokkaido
• Miocene: Akita, Iwate?, Yamagata?, Nagano, Yamanashi, Toyama, Ishikawa, Fukui, Gunma, Tochigi, Saitama, Aichi, Shiga, Okayama, Hiroshima, Yamaguchi
• Miocene-Pliocene: Nagano
• Pliocene: Niigata, Chiba
• Pliocene-Pleistocene: Nagano, Saitama
• Quaternary: Hiroshima
• Pleistocene: Hokkaido, Aomori, Niigata, Nagano, Ishikawa, Ibaraki, Saitama, Tokyo, Chiba, Kanagawa, Shizuoka, Aichi, Mie
• Holocene: Ishikawa, Saitama, Tokyo, Chiba
• Investigation in progress: Niigata, Kyoto