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Authors |
Year |
Title |
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Gordon |
1957 |
Mississippian Cephalopods of Northern and Eastern Alaska.
Professional Papers, U.S. Geological Survey, 283: 1-61, fig.1-61, pl.1-6; Washington.
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Kullmann |
1983 |
Maxima im Tempo der Evolution karbonischer Ammonoideen.
Paläontologische Zeitschrift, 57 (3/4): 231-240, fig.1-4, pl.1; Stuttgart.
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Miller & Owen |
1937 |
A new Pennsylvanian cephalopod fauna from Oklahoma.
Journal of Paleontology, 11 (5): 403-422, fig.1-5, pl.50-52; Tulsa, Oklahoma.
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Miller & Furnish |
1940c |
Permian ammonoids of the Guadalupe Mountain Region and adjacent areas.
Special Papers of the Geological Society of America, 26: 1-242, fig.1-59, pl.1-44; Baltimore.
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Miller & Unklesbay |
1943 |
The siphuncle in Late Paleozoic amonoids.
Journal of Paleontology, 17 (1): 1-25, fig.1-9, pl.1-5; Tulsa,Oklahoma.
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Ruzhencev |
1950 |
Verkhnekamennougol'nye ammonity Urala.
Trudy Paleont. Inst., Akad. Nauk SSSR, 29: 1-220, fig.1-84, pl.1-15; Moskva.
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Tanabe, Landman & Mapes |
1994 |
Early shell features of some late Paleozoic ammonoids and their systematic implications.
Transactions and Proceedings of the Palaeontological Society of Japan, n.ser., 173: 384-400, 8 figs.
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Unklesbay |
1962 |
Pennsylvanian Cephalopods of Oklahoma.
Bulletin of the Oklahoma Geological Survey, 96: 1-150, fig.1-16, tab.1-2, pl.1-19; Norman.
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