Stratigraphy
Baltic Ordovician
Stratigraphy | Index | Index add'l | Type | Rank | Scope | Belongs to | Age (Ma) | Age | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
Base | Top | ||||||||||
| Öland Series | chronostratigraphy | Series | regional | Baltic Ordovician | 489.8 | 463.8 | Ordovician | ||||
| Viru Series | chronostratigraphy | Series | regional | Baltic Ordovician | 463.8 | 452.0 | Upper Ordovician | ||||
| Harju Series | chronostratigraphy | Series | regional | Baltic Ordovician | 452.0 | 443.7 | Upper Ordovician | ||||
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