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Frest, Glenister & Furnish |
1981 |
Pennsylvanian--Permian Cheiloceratacean Ammonoid Families Maximitidae and Pseudohaloritidae.
Journal of Paleontology, 55, Suppl. 3: 1-46, fig.1-19, pl.1-7; Tulsa, Okla.
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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.
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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.
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