Glossary entry
| North America | |
| Cincinnatian (Katian – Hirnantian) | Gamachian (Hirnantian) |
| Richmondian (Katian) | |
| Maysvillian (Katian) | |
| Edenian (Katian) | |
| Mohawkian (Sandbian – Katian) | Chatfieldian (Sandbian – Katian) |
| Turinian (Sandbian) | |
| Whiterockian (Dapingian – Sandbian) | Chazyan (Darriwilian – Sandbian) |
| Rangerian (Dapingian) | |
| Ibexian (Cambrian stage 10 – Floian) | Blackhillsian (Floian) |
| Tulean (Tremadoc – Floian) | |
| Stairsian (Tremadoc) | |
| Skullrockian (Cambrian stage 10 – Tremadoc) | |