Type
Zone
Age range
493–492 Ma
Furongian
Jiangshanian
Saukiella junia/Saukiella pyrene
Ellipsocephaloides-Idahoia
Taenicephalus
493.0492.9492.9492.9492.8492.8492.7492.6492.6492.6492.5492.4492.4492.4492.3492.3492.2492.1492.1492.1492.0