Type
Age
Age range
298.9–297.5 Ma
Cisuralian
Asselian
Pennsylvanian
Gzhelian
Uskalykian
Sjuranian
Melekhovian
298.9298.8298.7298.6298.5298.4298.3298.2298.1298.0297.9297.8297.7297.6297.5