Type
Age
Age range
274.37–271.3 Ma
Guadalupian
Roadian
Cisuralian
Kungurian
Povolzhian
Sokian
Irenian
274.4274.2274.0273.8273.6273.4273.2273.0272.8272.6272.4272.2272.0271.8271.6271.4271.2