Nagao, T. (1928). Palaeogene fossils of the island of Kyûshû, Japan. Part I. Science reports of the Tohoku Imperial University. 2nd series, Geology. 9(3): 97-128, pls. 18-22.
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Nagao, T.
1928
Palaeogene fossils of the island of Kyûshû, Japan. Part I
Science reports of the Tohoku Imperial University. 2nd series, Geology