Ryugase Group
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 ~85–72 Ma | |
---|---|
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 | ![]() |
Extent | Sakhalin Island |
![]() ![]() Ryugase Group (Russia) |
Vertebrate paleofauna
- Nipponosaurus sachalinensis - "Partial skull and associated postcrania, juvenile."[2] Probably actually from the Yezo Group.
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See also
- List of dinosaur-bearing rock formations
- List of fossiliferous stratigraphic units in Russia
References
- Kawakami Colliery, Sakhalin at Fossilworks.org
- "Table 20.1," in Weishampel, et al. (2004). Page 442.
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