Northumberland Formation
| Northumberland Formation | |
|---|---|
| Stratigraphic range: Late Cretaceous, ? | |
| Type | Geological formation |
| Unit of | Nanaimo Group |
| Underlies | Spray Formation |
| Location | |
| Coordinates | 49°36′N 124°42′W / 49.6°N 124.7°W |
| Approximate paleocoordinates | 56°06′N 94°24′W / 56.1°N 94.4°W |
| Country | Canada |
The Northumberland Formation is a Late Cretaceous (?Campanian-?Maastrichtian)-aged geologic formation in Canada. It belongs to the larger Nanaimo Group. Indeterminate bird and pterosaur fossils have been recovered from the formation, as well as a potential gladius of Eromangateuthis. An extensive diversity of shark teeth is known from the formation; many appear to be closely allied with modern deep-water shark taxa, suggesting a deep-water environment for the formation. The most well-known exposures of the formation are on Hornby Island.