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Authors |
Year |
Title |
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Nassichuk |
1975 |
Carboniferous ammonoids and stratigraphy in the Canadian Arctic Archipelago.
Bulletin of the Geological Survey of Canada, 237: 1-240, fig.1-57, tab.1-33, pl.1-18; Ottawa.
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|
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Ruan |
1981b |
Carboniferous Ammonoid faunas from Qixu in Nandan of Guangxi.
Mem. Nanjing Inst. Geol. Palaeont., Acad. Sinica, 15: 153-232, fig.1-89, pl.1-15; Nanjing.
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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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