Type
Age
Age range
452.8–448.4 Ma
Late Ordovician
Katian
Sandbian
Bolindian
Eastonian
Gisbornian
Bolindian
Eastonian
Gisbornian
452.8452.6452.4452.2452.0451.8451.6451.4451.2451.0450.8450.6450.4450.2450.0449.8449.6449.4449.2449.0448.8448.6448.4