Authors Year Title
Fujikawa & Ishibashi 1999 Carboniferous and Permian Ammonoids from Northern Thailand (Paleontological Study of Paleozoic Cephalopods in Southeast Asia - 1).
Memoirs of the Faculty of Science, Kyushu University, Series D, 30 (3): 91-110, 11 fig.,  pl.2-3, Fukuoka.
Ishibashi, Fujikawa & Yoda 1998 Dorashamian biostratigraphy of the Doi Pha Phlung area, North Thailand. [T.Ishibashi, M.Fujikawa, S.Yoda & N.Nakornsri].
Proceedings of the Royal Society of Victoria, 110 (1/2): 221-226, 4 fig.