Morrison Formation
| Use attributes for filter ! | |
| Other | Sandstone, siltstone, limestone |
|---|---|
| Primary | Mudstone |
| Named for | Morrison |
| Overlies | Summerville Formation |
| Curtis Formation | |
| Bell Ranch Formation | |
| Underlies | Formation de Cedar Mountain |
| Cloverly Formation | |
| Lakota Formation | |
| Fossils | YPM 1853 |
| USNM 7414 | |
| USNM 4714 | |
| YPM 1860 | |
| BYU 17096 | |
| FMNH P 25107 | |
| Date of Reg. | |
| Date of Upd. | |
| ID | 2078423 |
About Morrison Formation
The Morrison Formation is a distinctive sequence of Upper Jurassic sedimentary rock found in the western United States which has been the most fertile source of dinosaur fossils in North America. It is composed of mudstone, sandstone, siltstone, and limestone and is light gray, greenish gray, or red.
Morrison Formation Photos
