沖縄本島南部における上部新生界微化石層序 : 第 2 部, 浮遊性有孔虫の産状と若干の分類学的所見

概要

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As revealed in the previous article (Part 1), the Upper Miocene to lowermost Pleistocene sequence developed in the southern area of Okinawa-jima, Ryukyu Islands, was successfully divided into nine calcareous nannofossil zones and nine planktonic foraminiferal ones based upon the same rock materials. In this paper, the stratigraphic occurrences of planktonic foraminifera are shown in detail using an occurrence chart of 90 taxa, a range chart of the selected 49 taxa, and the illustration of scanning electron micrographs of almost all taxa. Some of the results statistically confirm the validity of some inter-regional datum planes, while the others offer us a few locally valid datum planes. New stratigraphic and taxonomic informations on certain taxa are noticed.
国立科学博物館の論文