Authors Year Title
Shevyrev 1965 Nadortyad Ammonoidea. In: Ruzhentsev,V.E. & Sarycheva,T.G. (Eds.): Razvitie i smena morskikh organizmov na Rubezhe Paleozoia i Mezozoia.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 108: 166-182, fig.9-19, pl.17-24; Moskva.
Shevyrev 1968 Triasovye ammonoidei Yuga SSSR.
Trudy Paleontologicheskogo Instituta Akademiya Nauk SSSR, 119: 1-272, fig.1-92, pl.1-21; Moskva.
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.
Tozer 1979 The significance of the ammonoids Paratirolites and Otoceras in correlating the Permian-Triassic boundary beds of Iran and the People's Republic of China.
Canadian Journal of Earth Sciences, 16 (7): 1524-1532, fig.1-4, tab.1; Ottawa.