Windom shale
| Windom shale | |
|---|---|
| Stratigraphic range: Givetian ~ | |
Windom shale member of the Moscow formation, a trilobite pygidium (Eldredgeops rana) is exposed but not clearly visible | |
| Type | Member |
| Unit of | Moscow formation |
| Sub-units | Upper Windom, Lower Windom |
| Underlies | North Evans limestone |
| Overlies | Kashong Shale |
| Area | Western New York |
| Thickness | 15 meters |
| Lithology | |
| Primary | Shale |
| Other | limestone |
| Location | |
| Region | New York |
| Country | United States |
| Extent | Western New York |
| Type section | |
| Named for | Windom, New York |
| Named by | Amadeus William Grabau |
The Windom shale or Windom member is a member of the Moscow formation in New York. It preserves fossils going back to the Givetian stage of the middle Devonian. The Windom shale is widely known for its high quality trilobite fossils.