Jurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United States /
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| Format: | Government Document eBook |
| Language: | English |
| Published: |
Washington :
United States Department of the Interior, Geological Survey,
1982.
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| Series: | Geological Survey professional paper ;
1232. |
| Subjects: | |
| Online Access: | https://purl.fdlp.gov/GPO/gpo92531 |
| Item Description: | Title from title screen (viewed October 14, 2014). "Marine waters invaded Montana in late Callovian time, advanced southward across Wyoming in early Oxfordian time, and persisted in Montana during late Oxfordian time." |
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| Physical Description: | 1 online resource (iv, 44 pages, 26 unnumbered pages of plates) : illustrations, map. |
| Bibliography: | Includes bibliographical references (pages 41-42) and index. |