Authors Year Title
Ehiro 1966 Latest Permian ammonoid Paratirolites from the Ofunato district, Southern Kitakami Massif, Northeast Japan.
Transactions and Proceedings of the Palaeontological Society of Japan, n.ser., 184: 592-596, 3 figs.
Liang 1983 New material of Permian ammonoids with discussion on the origin, migration of Araxoceratidae and the horizon of the Paratirolites.
Acta Paleontologica Sinica, 22 (6): 606-615, fig.1-9, pl.1-2; 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, Kummel & Sweet 1973 Permian-Triassic strata, Kuh-e-Ali Bashi, Northwestern Iran.
Bulletin of the Museum of Comparative Zoology, Harvard University, 145 (8): 359-472, 14 pls., 16 figs., Cambridge, MA.
Zhao, Liang & Zheng 1978 Late Permian cephalopods of South China.
Palaeontologica Sinica, 154, N.S.B,12: 1-194, fig.1-105, pl.1-34; 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.
Zheng 1981 Uppermost Permian (Changhsingian) ammonoids from Western Guizhou.
Acta Paleontologica Sinica, 20 (2): 107-114, fig.1-6, pl.1-3; Beijing.