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.
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.