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Fox Hills Formation Fossils
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Gastropod, Euspira, Fox Hills Fm., Logan Co., height 23 mm. |
Leaf, Nilssonia, Fox Hills Fm., Emmons Co., height 147 mm. |
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Ratfish mandible, Ischyodus rayhaasi, Fox Hills Fm., Logan Co., width 65 mm. |
Cephalopod, Jeletzkytes nebrascensis, Fox Hills Fm., Emmons Co., width 118 mm. NDHC |
| North Dakota Geological Survey | Prehistoric Life of North Dakota |
| Page Modified October 10, 2006 |