| San Antonio Formation | |
|---|---|
| Stratigraphic range: Mid-late Pleistocene (Irvingtonian) ~ | |
| Type | Formation |
| Location | |
| Coordinates | 37°48′N 122°06′W / 37.8°N 122.1°W |
| Region | Alameda County, California |
| Country | United States |
The San Antonio Formation is a middle to late Pleistocene (Irvingtonian in the NALMA classification) geologic formation in California. It preserves fossils.[1]
