1. Depositional history of the Upper Cretaceous of the Northwest Shelf, based upon foraminifera;Apthorpe;Aust. Pet. Explor. Assoc. J.,1979
2. Geology of the Ok Tedi and southern Atbalmin 1:100,000 Sheet. Part 2: Stratigraphy of sedimentary units;Arnold;Geol. Surv. Papua New Guinea Rep.,1979
3. Stratigraphy, geochemistry and paleoceanography of organic carbon-rich Cretaceous sequences;Arthur,1990
4. Geology of the Kubor Anticline, Central Highlands of Papua New Guinea;Bain;Bull. Aust. Bur. Min. Res. Geol. Geophys.,1975
5. Micropaleontological synopsis of the Lower Cretaceous in Trinidad, West Indies: remarks on the Aptian/Albian boundary;Bartenstein;Newsl. Stratigr.,1987