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Authors |
Year |
Title |
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Antelo |
1969 |
Hallazgo del genero Protocanites (Ammonoidea) en el Carbonifero inferior de la provincia de San Juan.
Ameghiniana, 6 (1): 69-73, fig.1-6; Buenos Aires.
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Mason & Chaplin |
1979 |
Nancy and Cowbell Members of the Borden Formation. In: Ettersohn,F.R. & Dever,G.R., Carboniferous geology from the Appalachian Basin to the Illinois Basin through Eastern Ohio and Kentucky.
Ninth International Congress of Carboniferous Stratigraphy and Geology, Field Trip No.4, Guidebook.
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Miller & Collinson |
1951 |
Lower Mississippian ammonoids of Missouri.
Journal of Paleontology, 25: 454-487, fig.1-14, pl.68-71; Tulsa, Oklahoma.
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Smith |
1903 |
The Carboniferous Ammonoids of America.
Monography, U.S. geological Survey, 42: 1-211, pl.1-29; Washington.
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