부산대학교 도서관

Specimens of six (possibly seven) genera of arenaceous foraminifera of Late Eocene age were recovered from Lamont-Doherty core RC 9-58. A microtektite-rich zone occurs between 230 and 270 cm. in this core, and the arenaceous foraminifera from the same zone have selected these glassy objects as structural components for their tests. The size, color and location of the microtektites in some of the arenaceous tests indicate that the foraminifera may have selected them in preference to other particles available in the surrounding sediment. If the origin of microtektites can be ascribed to some type of cosmic event, this note represents the first reported utilization of extra-terrestrially produced material by a primitive earth organism.