- Cisuralian (Wikipedia)
The Cisuralian is the first series/epoch of the Permian. The Cisuralian was preceded by the Pennsylvanian and followed by the Guadalupian. The Cisuralian Epoch is named after the western slopes of the Ural Mountains in Russia and Kazakhstan and dates between 298.9 ± 0.15 – 272.3 ± 0.5 Ma.
- Georgia Depression (Wikipedia)
The Georgia Depression is a depression in the Pacific Northwest region of western North America. The depression includes the lowland regions of southwestern British Columbia and northwestern Washington along the shores of the Salish Sea.