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| Author | : | Cobban, W.A. |
| Author 2 | : | Skelton, P.W. |
| Author 3 | : | Kennedy, W.J. |
| Year of publication | : | 1991 |
| Title | : | Occurrence of the rudistid Durania cornupastoris (Des Moulins, 1826) in the Upper Cretaceous Greenhorn Limestone in Colorado. |
| Journal | : | United States Geological Survey, Bulletin |
| Vol/No/Pages/Plates | : | 1985: D1-D8, 1 fig., 3 pls., 1 tab. |
| Published in | : | Washington, D.C. |