| Caledonian (Silurian - Devonian) |
| Cenozoic, Palaeogene, Oligocene |
| Cenozoic, Palaeogene, Palaeocene |
| Lower Palaeozoic |
| Mesooproterozoic, Annagh Gneiss Complex |
| Mesozoic, Cretaceous |
| Mesozoic, Jurassic |
| Mesozoic, Triassic |
| Neoproterozoic |
| Neoproterozoic & Lower Palaeozoic |
| Neoproterozoic (-Cambrian), Dalradian Supergroup |
| Neoproterozoic, Dalradian Supergroup |
| Neoproterozoic, Rosslare Complex |
| Palaeogene |
| Palaeoproterozoic |
| Palaeoproterozoic, Annagh Gneiss Complex |
| Palaeozoic - Mesozoic, Permian - Triassic |
| Palaeozoic, Cambrian |
| Palaeozoic, Carboniferous |
| Palaeozoic, Carboniferous, Mississipp. - Pennsyl. |
|
| Palaeozoic, Carboniferous, Mississippian |
| Palaeozoic, Carboniferous, Pennsylvanian |
| Palaeozoic, Devonian |
| Palaeozoic, Lower - Middle Ordovician |
| Palaeozoic, Lower Devonian |
| Palaeozoic, Middle - Upper Ordovician |
| Palaeozoic, Middle Devonian |
| Palaeozoic, Ordovician - Silurian |
| Palaeozoic, Ordovician or Silurian |
| Palaeozoic, Permian |
| Palaeozoic, Silurian |
| Palaeozoic, Upper Devonian |
| Palaeozoic, Upper Devonian - Carboniferous |
