| Delaware River Formation | |
|---|---|
| Stratigraphic range: Devonian | |
 Colpodexylon deatsii, bark impression, Delaware River Formation, New York | |
| Type | Formation |
| Location | |
| Region | Pennsylvania, New York |
| Country | United States |
The Delaware River Formation is a geologic formation in Pennsylvania and New York (state). It preserves fossils dating back to the Devonian period.
