| Rybushka Formation | |
|---|---|
| Stratigraphic range: Campanian ~ | |
| Type | Geological formation |
| Lithology | |
| Primary | Sandstone |
| Other | Phosphorite |
| Location | |
| Coordinates | 51°18′N 45°00′E / 51.3°N 45.0°E |
| Approximate paleocoordinates | 42°36′N 40°12′E / 42.6°N 40.2°E |
| Region | Penza, Saratov |
| Country | Russia |
The Rybushka Formation is a upper Campanian geologic formation in the Penza and Saratov Oblasts of European Russia. The largest location of fossils is located near the village of Malaya Serdoba in the Penza region.
This formation is one of the largest in Europe in terms of its abundance of marine reptile and pterosaur remains, and the largest marine formation in Russia. One of the formation's unique features is the discovery of many species of fish, sharks, and marine reptiles previously known only from specific regions, such as North America and Western Europe. Pterosaur, fish and invertebrate fossils have been recovered from the formation.
The following fossils have been reported from the formation: