| Nacatoch Sand | |
|---|---|
| Stratigraphic range: Cretaceous | |
| Nacatoch Sand with trace fossil near Washington, Arkansas (1910) | |
| Type | Formation |
| Location | |
| Region | Arkansas |
| Country | United States |
The Nacatoch Sand is a geologic formation in Arkansas. It preserves fossils dating back to the Cretaceous period.