| Title | Oligocene fish | 
| Description | Oligocene fish collected at Sentinel Butte at locality 101 in the White River Formation.  Fossils photographed at Carlton College.  Collected in May of 1978. | 
| Chronostratigraphy | Oligocene | 
| Lithostratigraphy | White River Formation | 
| Location | USA ▹ North Dakota ▹ Morton. Near Bismarck. Sentinel Butte. | 
| Photographer | Joseph Hartman. 2002-01-10. | 
| Collection | Joseph Hartman PO2260. | 
| Key words | oligocene, sentinel butte, white river formation | 
| Tech details | 143 KB. Hand specimen. Kodachrome, TIFF format. | 
| GeoDIL number | 1950 | 
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