| San Angelo Formation | |
|---|---|
| Stratigraphic range: | |
| Type | Formation |
| Unit of | Pease River Group |
| Underlies | Blaine Formation |
| Overlies | Clear Fork Group |
| Location | |
| Region | Texas |
| Country | United States |
The San Angelo Formation is a geologic formation in Texas. It preserves fossils dating back to the Permian period. Along with the Chickasha Formation is one of the two geologically youngest formations in North America to preserve fossils of caseids, and it is the youngest one to preserve remains of undoubted sphenacodontids, namely, Dimetrodon angelensis.[1][2]
- ^ Olson 1962.
- ^ Cite error: The named reference
Laurin & Hook 2022was invoked but never defined (see the help page).