Upper Ordovician
General info
| Belongs to |
Ordovician
|
| Type | chronostratigraphy |
| Rank | Series |
| Scope | global |
| Status | formal standard |
| Age top (Ma) | 443.8 |
| Age base (Ma) | 458.4 |
| Index | O3 |
| Alt. index | O3 |
| Date added | 2003-03-23 |
| Date changed | 2022-11-04 |
| Stratigraphy | Index | Index add'l | Type | Rank | Scope | Belongs to | Age base (Ma) | Age top (Ma) | Age |
|---|---|---|---|---|---|---|---|---|---|
| Keila Stage | DII | O3KL |
chronostratigraphy
|
Stage
|
regional
| Kurna Subseries | 456.2 | 454.2 |
Upper Ordovician
|
| Laagri Substage | DIIβ |
chronostratigraphy
|
Substage
|
regional
| Keila Stage |
Upper Ordovician
| |||
| Ristna Substage | DIIα |
chronostratigraphy
|
Substage
|
regional
| Keila Stage |
Upper Ordovician
| |||
| Harju Series |
chronostratigraphy
|
Series
|
regional
| Baltic Ordovician | 452 | 443.7 |
Upper Ordovician
| ||
| Kurna Subseries |
chronostratigraphy
|
Subseries
|
regional
| Viru Series | 458.2 | 454.2 |
Upper Ordovician
| ||
| Kohila Subseries |
chronostratigraphy
|
Subseries
|
regional
| Harju Series | 452 | 449.8 |
Upper Ordovician
| ||
| Atla Subseries |
chronostratigraphy
|
Subseries
|
regional
| Harju Series | 449.8 | 443.7 |
Upper Ordovician
|
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