Back Berriasium AF البرياسي Arabic Berriasianu AST Berijasij BS Berriasià Catalan Berrias Czech Berriasium German Βερριάσιο Greek Berriasiense Spanish Berriasiar EU
| Berriasian | |||||||||
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| Chronology | |||||||||
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| Etymology | |||||||||
| Name formality | Formal | ||||||||
| Usage information | |||||||||
| Celestial body | Earth | ||||||||
| Regional usage | Global (ICS) | ||||||||
| Time scale(s) used | ICS Time Scale | ||||||||
| Definition | |||||||||
| Chronological unit | Age | ||||||||
| Stratigraphic unit | Stage | ||||||||
| Time span formality | Formal | ||||||||
| Lower boundary definition | Undefined | ||||||||
| Lower boundary definition candidates |
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| Lower boundary GSSP candidate section(s) | None | ||||||||
| Upper boundary definition | Undefined | ||||||||
| Upper boundary definition candidates | FAD of the Calpionellid Calpionellites darderi | ||||||||
| Upper boundary GSSP candidate section(s) | |||||||||
In the geological timescale, the Berriasian is an age/stage of the Early/Lower Cretaceous. It is the oldest subdivision in the entire Cretaceous. It has been taken to span the time between 143.1 ±0.6 Ma and 137.05 ± 0.2 (million years ago).[2] The Berriasian succeeds the Tithonian (part of the Jurassic) and precedes the Valanginian.
- ^ "International Chronostratigraphic Chart" (PDF). International Commission on Stratigraphy. December 2024. Retrieved January 11, 2025.
- ^ Cohen, K.M., Finney, S.C., Gibbard, P.L. & Fan, J.-X. (2013; updated) The ICS International Chronostratigraphic Chart. Episodes 36: 199–204.