Scaphitoid cephalopods of the Colorado group. : Evolution of Scaphites and related genera, with descriptions and illustrations of new species and a new genus from western interior United States.
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| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Govt. Print. Off,
1951.
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| Series: | Professional paper (Geological Survey (U.S.)) ;
239. |
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| Physical Description: | iii, 42 pages : illustrations, 21 plates. ; 29 cm. |
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| Bibliography: | "References": page 39. |