Valanginian
| Valanginian | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Chronology | |||||||||
| |||||||||
| 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 | FAD of Thurmanniceras pertransiens (Ammonite) | ||||||||
| Lower boundary GSSP | Montbrun-les-Bains, Drôme, France 44°12′11″N 5°25′03″E / 44.2031°N 5.4175°E | ||||||||
| Lower GSSP ratified | December 2024 | ||||||||
| Upper boundary definition | FAD of the Ammonite genus Acanthodiscus | ||||||||
| Upper boundary GSSP | La Charce, Drôme, France 44°28′10″N 5°26′37″E / 44.4694°N 5.4437°E | ||||||||
| Upper GSSP ratified | December 2019 | ||||||||
In the geologic timescale, the Valanginian is an age or stage of the Early or Lower Cretaceous. It spans between 137.05 ± 0.2 Ma and 132.6 ± 0.2 Ma (million years ago). The Valanginian Stage succeeds the Berriasian Stage of the Lower Cretaceous and precedes the Hauterivian Stage of the Lower Cretaceous.