Matsumaru, K.; Myint Thein; Ogawa, Y. (1993). 948. Early Miocene (Aquitanian) larger foraminifera from the Shimizu Formation, Ashizuri Cape, Kochi Prefecture, Shikoku, Japan. Transactions and proceedings of the Paleontological Society of Japan. New series. 169: 1-14.
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Matsumaru, K.; Myint Thein; Ogawa, Y.
1993
948. Early Miocene (Aquitanian) larger foraminifera from the Shimizu Formation, Ashizuri Cape, Kochi Prefecture, Shikoku, Japan
Transactions and proceedings of the Paleontological Society of Japan. New series