Ludfordian
General info
| Belongs to |
Ludlow
|
| Type | chronostratigraphy |
| Rank | Stage |
| Original rank | lade |
| Scope | global |
| Status | formal standard |
| Age top (Ma) | 423 |
| Age base (Ma) | 425.6 |
| Date added | 2003-04-02 |
| Date changed | 2022-12-28 |
| Stratigraphy | Index | Index add'l | Type | Rank | Scope | Belongs to | Age base (Ma) | Age top (Ma) | Age |
|---|---|---|---|---|---|---|---|---|---|
| Kuressaare Stage | K3a | S3KR |
chronostratigraphy
|
Stage
|
regional
| upper Silurian | 419.4 | 418.7 |
Ludfordian
|
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