Mesozoic
Cretaceous
Late Cretaceous
Turonian
Cenomanian
171.3 Ma
Paleozoic
Permian
Guadalupian
Wordian
Roadian
Cisuralian
Kungurian
17.1 Ma
Paleozoic
Permian
Cisuralian
Artinskian
Sakmarian
Asselian
Carboniferous
Pennsylvanian
Gzhelian
Kasimovian
Moscovian
Bashkirian
Mississippian
Serpukhovian
8.4 Ma
Paleozoic
Carboniferous
Mississippian
Visean
98.5 Ma
Paleozoic
Silurian
Llandovery
Telychian
Aeronian