Authors Year Title
Glenister, Glenister & Skwarko 1983 Lower Permian Cephalopods from Western Irian Jaya, Indonesia.
Geological Research and Development Centre, Paleonotolgy Series, 4, 1983: 74-85.
Roever 1940 Description of some Permian ammonoids from F. Koekatoe, Lidak. Paleontological Appendix to A.L.Simons, Geological Investigations in northeastern Netherlands Timor.
Univ. Amsterdam Thesis, 96-100, Amsterdam.