|
Mapes, Windle & Sturgeon |
1997 |
Pennsylvanian Cephalopods of Ohio. Part 2. Ammonoid Cephalopods. [Mapes, R.H., Windle, D.L., Sturgeon, M.T. & Hoare, R.D., 1997.]
Ohio Division of Geological Survey, Bulletin 71: 193-260, 7 pls., 32 figs., Columbus, OH.
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Sturgeon & Miller |
1948 |
Some additional cephalopods from the Pennsylvanian of Ohio.
Journal of Paleontology, 22 (1): 75-80, pl.18,19; Tulsa,Oklahoma.
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Sturgeon, Windle & Mapes |
1982 |
New and revised taxa of Pennsylvanian cephalopods in Ohio and West Virginia. [M.T.Sturgeon, D.L.Windle, R.H.Mapes & R.D.Hoare].
Journal of Paleontology, 56 (6): 1453-1479, fig.1-6; Lawrence, Kansas.
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