	Authors	Year	Title
	Zhou & Liengjarern	1998	Permian Ammonoid Perrinites Fauna Associated with Fusulinids Misellina in Thailand. Permophiles, 31: 36-37.
	Zhou & Liengjarern	2004	Lower Permian perrinitid ammonoid faunas from Thailand. Journal of Paleontology, 78: 317-339, 18 fig., 4 tab., Lawrence, KS.