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Sweet & Miller |
1956 |
Goniatites from the Middle Devonian Columbus Limestone of Ohio.
Journal of Paleontology, 30: 811-817, fig.1, pl.94; 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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