Type
Age
Age range
318.8–317.8 Ma
Pennsylvanian
Bashkirian
Duckmantian
Langsettian
Yeadonian
318.8318.8318.7318.6318.6318.6318.5318.4318.4318.4318.3318.3318.2318.1318.1318.1318.0317.9317.9317.9317.8