MolluscaBase source details
Nagao, T. & Otatume, K. (1938). Molluscan fossils of the Hakobuti Sandstone of Hokkaido. Journal of the Faculty of Science, Hokaido Imperial University, Series 4, Geology and Minerology. 4: 31-56.
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Nagao, T. & Otatume, K.
1938
Molluscan fossils of the Hakobuti Sandstone of Hokkaido
Journal of the Faculty of Science, Hokaido Imperial University, Series 4, Geology and Minerology
4: 31-56
Publication
Date
action
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Helcion problematicus Nagao & Otatume, 1938 † accepted as Gigantocapulus problematicus (Nagao & Otatume, 1938) † (original description)
