| Grimsby Formation | |
|---|---|
| Stratigraphic range: Silurian | |
 Grimsby Formation exposed in Niagara Gorge, New York | |
| Type | Formation |
| Location | |
| Region |  New York |
| Country |  United States |
The Grimsby Formation is a geologic formation in New York. It preserves fossils dating back to the Silurian period.