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Barrem je čtvrtý ze šesti chronostratigrafických stupňů spodní křídy, který je datován do rozmezí před 129,4 až 125,0 Ma (milionů let). Nověji pak je toto geologické období rané křídy datováno na 125,77 až 121,4 (+- 1 m. l.). Barremu předcházel hauteriv a následoval ho apt.
Fauna, Definice & Dělení
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125 let pak křídy apt spodní milionů období barremu amonitů ma hauteriv stupeň roce báze hranice určena začátku tomto zejména
| Subject | Predicate | Object | Confidence | Src |
|---|---|---|---|---|
| Barrem | related to Definice | Původní | 0.60 | section |
| Barrem | related to Definice | Barrême | 0.60 | section |
| Barrem | related to Definice | Alpes-de-Haute-Provence | 0.60 | section |
| Barrem | related to Definice | Francie | 0.60 | section |
| Barrem | related to Definice | Henry Coquand | 0.60 | section |
| Barrem | related to Definice | Báze | 0.60 | section |
| Barrem | related to Definice | Spitidiscus | 0.60 | section |
| Barrem | related to Definice | Horní | 0.60 | section |
| Barrem | related to Definice | M0r | 0.60 | section |
| Barrem | related to Definice | Paradeshayesites | 0.60 | section |
| Barrem | related to Dělení | Stupeň | 0.60 | section |
| Barrem | related to Dělení | Tethys | 0.60 | section |
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