	Authors	Year	Title
	Blendinger, Furnish & Glenister	1992	Permian cephalopod limestones, Oman Mountains: evidence for a Permian seaway along the northern margin of Gondwana. Palaeogeography, Palaeoclimatology, Palaeoecology, 93: 13-20, 4 figs., Amsterdam.
	Hayasaka	1963	Some Permian Fossils from Southern Kitakami. III Ammonoidea. Proceedings of the Japan Academy, 39: 594-599, 7 figs., Tokyo.
	Zhou, Zhu & Li	1995	Permian Maokouan nearshore sea of South China and its ammonoid fauna. [Zhou Zuren, Zhu De-shou, Li-Fuyu & Hu Yao-hua. In Chinese, with English Summary]. Acta Palaeontologia Sinica, 34 (5): 525-548, 6 fig., 4 pl., Nanjing.