Type
Age
Age range
476–472.4 Ma
Early Ordovician
Floian
Chewtonian
Bendigonian
Lancefieldian
Chewtonian
Bendigonian
Lancefieldian
476.0475.8475.6475.4475.2475.0474.8474.6474.4474.2474.0473.8473.6473.4473.2473.0472.8472.6472.4