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Miller & Furnish |
1940b |
Studies of Carboniferous ammonoids: parts 5-7.
Journal of Paleontology, 14 (6): 521-543, fig.1-7, pl.62-65; Tulsa, Okla.
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Miller & Furnish |
1958a |
Middle Pennsylvanian Schistoceratidae (Ammonoidea).
Journal of Paleontology, 32 (2): 253-268, fig.1-9, pl.33-34; Tulsa,Oklahoma.
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