Hanagata, S. 2002. Eocene shallow marine foraminifera from subsurface sections in the Yufutsu-Umaoi district, Hokkaido, Japan. Paleontological Research 6: 147-178.
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Hanagata, S.
2002
Eocene shallow marine foraminifera from subsurface sections in the Yufutsu-Umaoi district, Hokkaido, Japan