Foraminifera source details
Asano, K. (1951). Illustrated Catalogue of Japanese Tertiary Smaller Foraminifera, Part 8, Polymorphinidae. Tokyo: Hosokawa Printing Company. 12-19.
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Asano, K. (1951). Illustrated Catalogue of Japanese Tertiary Smaller Foraminifera, Part 8, Polymorphinidae. Tokyo: Hosokawa Printing Company. 12-19.
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Glandulina nipponica Asano, 1951 (original description)
Pyrulina hamadaensis Asano, 1951 (original description)
Sigmomorphina notoensis Asano, 1951 † (original description)
Pyrulina hamadaensis Asano, 1951 (original description)
Sigmomorphina notoensis Asano, 1951 † (original description)