First age of the early Cretaceous
| Berriasian |
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−140 — – −130 — – −120 — – −110 — – −100 — – −90 — – −80 — – −70 — – | | | Subdivision of the Cretaceous according to the ICS, as of 2023.[1]Vertical axis scale: millions of years ago. |
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| Name formality | Formal |
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| Celestial body | Earth |
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| Regional usage | Global (ICS) |
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| Time scale(s) used | ICS Time Scale |
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| Chronological unit | Age |
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| Stratigraphic unit | Stage |
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| Time span formality | Formal |
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| Lower boundary definition | Undefined |
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| Lower boundary definition candidates |
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| Lower boundary GSSP candidate section(s) | None |
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| Upper boundary definition | Undefined |
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| Upper boundary definition candidates | FAD of the Calpionellid Calpionellites darderi |
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| Upper boundary GSSP candidate section(s) |
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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 145.0 ± 4.0 Ma and 139.8 ± 3.0 Ma (million years ago). The Berriasian succeeds the Tithonian (part of the Jurassic) and precedes the Valanginian.