| Rancocas Group | |
| Type: | Group |
| Age: | latest Maastrichtian to Thanetian, |
| Subunits: | Hornerstown Formation, Vincentown Formation |
| Underlies: | Manasquan Formation |
| Overlies: | Monmouth Group |
| Period: | Paleocene |
The Rancocas Group is a geologic group in New Jersey. It preserves fossils dating back to the latest Cretaceous and the Paleogene period, meaning that it spans the Cretaceous-Paleogene boundary. It contains the Hornerstown Formation and the Vincentown Formation, with some treatments also including the Manasquan Formation within it.[1] [2]