| System |
Sub-System |
NA Stage |
Global Stage |
NW Europe Faunal Stage |
| Carboniferous |
Pennsylvanian |
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| Mississippian |
Chesterian |
Serpukhovian |
Alportian |
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| Chokerian |
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| Arnsbergian |
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| Pendleian |
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| Visean |
Brigantian |
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| Meramecian |
Asbian |
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| Holkerian |
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| Osagean |
Arundian |
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| Chadian |
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| Tournaisian |
Ivorian |
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| Kinderhookian |
Hastarian |
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| Devonian |
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