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Acila sp.

genus Acila H. Adams and A. Adams, 1858

• Modern species: Early Cretaceous - Present (112.6 - 0.0 Ma)
• Habitat: Marine

• Classification
• kingdom Animalia, phylum Mollusca, class Bivalvia, order Nuculoida, family Nuculidae

• Distribution
• Cretaceous: Hokkaido, Ehime
• Paleogene-Neogene: Nagano
• Oligocene: Hokkaido, Fukushima
• Miocene: Hokkaido, Miyagi, Fukushima, Nagano, Toyama, Fukui, Tochigi, Ibaraki, Saitama, Aichi, Mie, Shiga, Kyoto, Okayama, Hiroshima, Tottori, Shimane, Kagawa
• Miocene-Pliocene: Fukushima
• Pliocene: Hokkaido, Aomori, Akita, Niigata, Nagano, Ishikawa, Ibaraki, Kanagawa
• Pliocene-Pleistocene: Niigata, Nagano, Ishikawa, Kanagawa
• Pleistocene: Hokkaido, Yamagata, Niigata, Toyama, Ishikawa, Ibaraki, Tokyo, Chiba, Kanagawa, Shizuoka
• Investigation in progress: Saitama (Miocene?)

• Subtaxa
• A. divaricata, Divaricate nut clam
• A. elongata
• A. gottschei
• A. hokkaidoensis
• A. insignis
• A. minutoides
• A. mirabilis
• A. musashiensis
• A. nakazimai
• A. oyamadensis
• A. picturata
• A. submirabilis
• A. vigilia, Northern divaricated nut clam