The occurrence of Cretaceous foraminifera in the Philippines has been recorded as early as 1950 but detailed study of the fauna has never been undertaken. It was only in 1964 when paleontologists of the Philippine Bureau of Mines started to undertake a more intensive research on the subject to trace the morphogenetic development of the fauna and to establish the foraminiferal sequence within the different Cretaceous stages represented in the Philippines.

This report is based on the data so far gathered from the continuing study which has been carried only to the limits of the details furnished by available materials.