Table of Stratigraphical Systems
Quaternary Group
Post-Pliocene and Recent
Cainozoic Group
Pliocene
Miocene
Oligocene
Eocene
Mesozoic Group
Cretaceous
Jurassic
Triassic
Palæozoic Group
Permian
Carboniferous
Devonian
Gotlandian (= Silurian or Upper Silurian)
Ordovician (or Lower Silurian)
Cambrian
Pre-Cambrian Group