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 |