| Almy Formation(expression, geology, formation, wyoming) |
| Aycross Formation(expression, geology, formation, wyoming) |
| Bridger Formation(expression, geology, formation, wyoming) |
| Brule Formation(expression, geology, formation, wyoming) |
| Chadron Formation(expression, geology, formation, wyoming) |
| Evanston Formation(expression, geology, formation, wyoming) |
| Fort Union Formation(expression, geology, formation, wyoming) |
| Fowkes Formation(expression, geology, formation, wyoming) |
| Gering Formation(expression, geology, formation, wyoming) |
| Green River Formation(expression, geology, formation, wyoming) |
| Hanna Formation(expression, geology, formation, wyoming) |
| Hell Creek Formation(expression, geology, formation, wyoming) |
| Hoback Formation(expression, geology, formation, wyoming) |
| Indian Meadows Formation(expression, geology, formation, wyoming) |
| Lamar River Formation(expression, geology, formation, wyoming) |
| Laramide orogeny(expression, geology, orogeny, wyoming) |
| Lebo Formation(expression, geology, formation, wyoming) |
| Machaeroides(noun, geology, unit, wyoming) |
| Monroe Creek Formation(expression, geology, formation, wyoming) |
| Pass Peak Formation(expression, geology, formation, wyoming) |