Silurian
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Stratigraphy | Index | Index add'l | Type | Rank | Scope | Belongs to | Age (Ma) | Age | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Base | Top | ||||||||||
| Llandovery | S1 | S1 | chronostratigraphy | Series | global | Silurian | 443.8 | 433.4 | Silurian | ||
| Wenlock | S2 | S2 | chronostratigraphy | Series | global | Silurian | 433.4 | 427.4 | Silurian | ||
| Ludlow | S3 | S3 | chronostratigraphy | Series | global | Silurian | 427.4 | 423.0 | Silurian | ||
| Přidoli | S4 | S4 | chronostratigraphy | Series | global | Silurian | 423.0 | 419.2 | Silurian | ||
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