Ryugase Group
Geologic formation in Russia
From Wikipedia, the free encyclopedia
The Ryugase Group is a geological formation on Sakhalin Island in far eastern Russia whose strata date back to the Late Cretaceous.[1]
| Ryugase Group | |
|---|---|
| Stratigraphic range: Late Santonian- Early Campanian ~ | |
| Type | Geological formation |
| Overlies | Yezo Group |
| Lithology | |
| Primary | Mudstone |
| Location | |
| Coordinates | 47.2°N 142.5°E |
| Approximate paleocoordinates | 51.9°N 130.0°E |
| Region | Sakhalin Oblast |
| Country | Russia |
| Extent | Sakhalin Island |
  Ryugase Group (Russia) | |
Vertebrate paleofauna
- Nipponosaurus sachalinensis - "Partial skull and associated postcrania, juvenile."[2] Probably actually from the Yezo Group.
