The Ryugase Group is a geological formation on Sakhalin Island in far eastern Russia whose strata date back to the Late Cretaceous.

Vertebrate paleofauna

• Nipponosaurus sachalinensis - "Partial skull and associated postcrania, juvenile." Probably actually from the Yezo Group.

See also

• List of dinosaur-bearing rock formations

• List of fossiliferous stratigraphic units in Russia

References

Bibliography