	Authors	Year	Title
	Ehiro & Bando	1985	Late Permian ammonoids from the Southern Kitakami Massif, Northeast Japan. Transactions and Proceedings of the Palaeontological Society of Japan, N.S., 137: 25-49, fig.1-9, tab.1-8, pl.5-7; Tokyo.
	Frech	1895	Ueber palaeozoische Faunen aus Asien und Nordafrika. Neues Jahrbuch für Mineralogie, Geologie und Palaeontologie, 1895: 47-67, fig.1-11; Stuttgart.
	Guo	1988	Late Permian ammonoids from lower Yangtze area and their palaeoecological significance. Acta Paleontologica Sinica, 27 (3): 390-397, fig.1-8, pl.1-2; Beijing.
	Liao	1978	Subclass Ammonoidea.[In Chinese]. Atlas of the Paleontology of Southwest China, Guizhou Province Part 2: Carboniferous-Quarternary: 380-439, pl.130-141; Beijing.
	Taraz	1969	Permo-Triassic Section in Central Iran. Bulletin of the American Association of Petroleum Geoligusts, 53 (3): 688-693, 2 figs., Tehran.
	Teichert	1942	Permian ammonoids from Western Australia. Journal of Paleontology, 16 (2): 221-232, fig.1-7, pl.35; Tulsa,Oklahoma.
	Wang	1990	Late permian and Early Triassic ammonoid fauna from Fenghai, Yong'an, Fujian and their stratigraphic significance. Acta Paleontologica Sinica, 29 (6): 755-773, fig.1-7, pl.1-4; Beijing.
	Zhao, Sheng & Yao	1981	The Changhsingian and Permian-Triassic Boundary of South China. Bulletin of Nanjing Institute of Geology and Palaeontology, Academia Sinica, 2: 58-111, pl.1-16, 2 tabl.