Type
Age
Age range
500.5–499 Ma
Miaolingian
Guzhangian
Drumian
Mindyallan
Boomerangian
Undillan
Mindyallan
Boomerangian
Undillan
500.5500.4500.3500.2500.1500.0499.9499.8499.7499.6499.5499.4499.3499.2499.1499.0