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| Rancocas Group | |
|---|---|
| Stratigraphic range: Paleogene | |
| Type | Group |
| Location | |
| Region |  New Jersey |
| Country |  United States |
The Rancocas Group is a geologic group in New Jersey. It preserves fossils dating back to the Paleogene period. [1]
The Thunder Bay Limestone is a geologic formation in Michigan. It preserves fossils dating back to the Devonian period.
The Black River Group is a geologic group in Illinois and West Virginia. It preserves fossils dating back to the Ordovician period.
The Potomac Group is a geologic group in Delaware, Maryland, New Jersey, and Virginia. It preserves fossils dating back to the Cretaceous period. An indeterminate tyrannosauroid and Priconodon crassus, a nodosaurid, are known from indeterminate sediments belonging to the Potomac Group. The Potomac Group was initially believed to have been Late Jurassic in age by Othniel Charles Marsh but later studies, such as Clark (1897), have found that the Potomac Group is in fact Early-Late Cretaceous (Aptian-Turonian) in age.
The Patapsco Formation is a geologic formation of varigated clays, sandy clays, and sand in Virginia, the District of Columbia, Maryland, Delaware, Pennsylvania, and in the subsurface of New Jersey. It preserves fossils such as plants and molluscs dating back to the Cretaceous 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 Leithsville Formation is a geologic formation in New Jersey. It preserves fossils dating back to the Cambrian period.
The Coeymans Limestone is a geologic formation in New Jersey. It preserves fossils dating back to the Devonian period.
The Wenonah Formation is a geologic formation in New Jersey. It preserves fossils dating back to the Cretaceous period.
The Sandy Hook Formation is a geologic formation in New Jersey. It preserves fossils dating back to the Cretaceous period.
The South Amboy Fire Clay Group is a geologic group in New Jersey. It preserves fossils dating back to the Cretaceous period.
The Tinton Formation is a geologic formation in New Jersey. It preserves fossils dating back to the Cretaceous-Paleocene periods, such as ammonites.
The Manasquan Formation is a geologic formation in New Jersey. It preserves fossils dating back to the Paleogene period.
The Shark River Marl is a geologic formation in New Jersey. It preserves fossils dating back to the Paleogene period.
The Cape May Formation is a geologic formation in New Jersey. It preserves fossils.
The Monmouth Group is a geologic group in New Jersey. It preserves fossils dating back to the Cretaceous period.
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