| 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.
Scaglia is an extinct genus of South American astrapotherid land mammal that lived during the Eocene.
The Lucas Formation is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Rochester Shale is a geologic formation exposed in New York and West Virginia. It preserves fossils dating back to the Silurian period.
The Sonyea Group is a geologic group in the northern part of the Appalachian Basin. It preserves fossils dating back to the Devonian period.
The Java Formation is a geologic formation in Kentucky, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia. It preserves fossils dating back to the Devonian period. The formation comprises the Pipe Creek Shale, Wiscoy Sandstone Member in New York, and Hanover Shale Member except in Tennessee.
The Kirkland Formation is a geologic formation in New York. It preserves fossils dating back to the Silurian period.
The Reynales Formation is a geologic formation in New York. It preserves fossils dating back to the Silurian period.
The Cattaraugus Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Oswayo Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Enfield Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Moscow Formation is a geologic formation in New York. It preserves fossils dating back to the Givetian stage. It represents around 1.5–2 million years of constant deposition.
The New Scotland Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Oneonta Formation is a geologic formation in New York. It preserves fossils dating back to the Devonian period.
The Fort Cassin Formation is a geologic formation in New York. It preserves fossils dating back to the Ordovician period.
The Valcour Formation is a geologic formation in New York and Vermont. It preserves fossils dating back to the Ordovician period.
The Crown Point Formation is a geologic formation in New York and Vermont. It preserves invertebrate fossils dating back to the Ordovician period. Notable fossiliferous localities within the Crown Point Formation include quarries in the towns of Panton and Isle La Motte, Vermont.
The Day Point Formation is a geologic formation in New York and Vermont. It preserves fossils dating back to the Ordovician period.
The Normanskill Formation is a geologic formation in New York. It preserves fossils dating back to the Ordovician period.
The New River Formation is a geologic formation in West Virginia. It preserves fossils dating back to the Carboniferous period.
The Pocahontas Formation is a coal-bearing geologic formation in West Virginia. It preserves fossils dating back to the Carboniferous period.
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