| Title | Basal Sentinel Butte |
| Description | Basal Sentinel Butte locality L78. Close-up of shell bed. Shell layer 2-3” thick located 3’ above base of Sentinel Butte formation. |
| Lithostratigraphy | Basil Sentinel Butte Formation |
| Geologic province | Williston Basin |
| Location | USA ▹ North Dakota ▹ McKenzie County. Basal Sentinel Butte. |
| Photographer | Joseph Hartman. 2002-01-09. |
| Collection | Joseph Hartman PO2146. |
| Key words | basal sentinel butte, L78 |
| Tech details | 251 KB. Hand specimen. Kodachrome, TIFF format. |
| GeoDIL number | 1929 |
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