Calcareous nannofossil biostratigraphy of the upper Pliocene to lowermost Pleistocene distributed in the northern part of Akita Prefecture, Honshu, Japan-with special reference to the late Pliocene paleoceanography event-

Sato, T., Higuchi, T., Ishii, T., Yuguchi, S., Amano, K., & Kameo, K. (2003). Calcareous nannofossil biostratigraphy of the upper Pliocene to lowermost Pleistocene distributed in the northern part of Akita Prefecture, Honshu, Japan-with special reference to the late Pliocene paleoceanography event-. The Journal of the Geological Society of Japan, 109(5), 280–292. https://doi.org/10.5575/geosoc.109.280