Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Willwood Formation  | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....lower Eocene | |
| ......Willwood Formation | |
| RT | Wyoming |
| SN | Variegated shales and hornblende-bearing sandstones conformably overlying Polecat Bench Formation near center of Bighorn Basin. In N Wyoming. |