Middle Jurassic (Bajocian) ammonites from eastern Oregon,
Additional title page description: Bajocian ammonites of eastern Oregon greatly resemble those of Alaska and Europe, indicate marine connections with Europe, and permit accurate zonal dating in the Pacific Coast region
| Main Authors: | , |
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| Corporate Author: | |
| Format: | Government Document Book |
| Language: | English |
| Published: |
Washington :
U.S. Govt. Print. Off.,
1973
Washington, 1973 |
| Series: | Geological Survey professional paper
756 Geological Survey professional paper 756 Geological Survey professional paper 756 |
| Subjects: |