New and little-known ammonites from the Upper Cretaceous (Cenomanian and Turonian) of the western interior of the United States /
| Main Author: | |
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Govt. Print. Off,
1971.
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| Series: | Geological Survey professional paper ;
699. |
| Subjects: |
| Physical Description: | iii, 24 pages, 38 unnumbered pages : illustrations ; 30 cm. |
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| Bibliography: | Bibliography: pages 20-22 (2d group). |