Hy. Ling et R. Hall, NOTE ON AN AGE OF THE BASAL SEDIMENTARY SEQUENCE OF WAIGEO ISLAND, EASTERN INDONESIA, Journal of Southeast Asian earth sciences, 11(1), 1995, pp. 53
The Tanjung Bomas Formation is the basal sedimentary unit of Waigeo Is
land of eastern Indonesia. A fragile and diverse late Middle Eocene ra
diolarian assemblage recovered from a locality near the type section r
epresents the oldest in situ Tertiary fossils from the island.