Stratigraphy
Burtnieki Stage
| Belongs to | Baltic Middle Devonian |
| Type | chronostratigraphy |
| Rank | Stage |
| Scope | regional |
| Status | formal standard |
| Author | Mark |
| Year | 1958 |
| Etymon | Burtnieks Lake, Latvia |
| Age top (Ma) | 377 |
| Age base (Ma) | 380.5 |
| Age (Ma) | Givetian |
| Alt. index | D2BR |
| Date changed | 2022-12-05 |
Locality | Type | From (m) | To (m) | Reference | Remarks | |
|---|---|---|---|---|---|---|
| Salaca River outcrop | holostratotype |
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