| Title | Oligocene fish |
| Description | Oligocene fish collected at Sentinel Butte, Location 101 in the White River Formation. Collected May 4, 1978. |
| Chronostratigraphy | Oligocene |
| Lithostratigraphy | White River Formation |
| Location | USA ▹ North Dakota ▹ Morton County. Near Bismarck. Sentinel Butte. |
| Photographer | Joseph Hartman. 2002-01-10. |
| Collection | Joseph Hartman PO2259. |
| Key words | oligocene, sentinel butte, white river formation |
| Tech details | 124 KB. Hand specimen. Kodachrome, TIFF format. |
| GeoDIL number | 1949 |
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