| Hauterivian | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| 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 | FAD of the Ammonite genus Acanthodiscus | ||||||||
| Lower boundary GSSP | La Charce, Drôme, France 44°28′10″N 5°26′37″E / 44.4694°N 5.4437°E | ||||||||
| Lower GSSP ratified | December 2019[2] | ||||||||
| Upper boundary definition | Not formally defined | ||||||||
| Upper boundary definition candidates | FAD of the Spitidiscus hugii-Spitidiscus vandeckii Ammonite group | ||||||||
| Upper boundary GSSP candidate section(s) | Río Argos, Caravaca de la Cruz, Murcia Province, Spain | ||||||||
The Hauterivian is, in the geologic timescale, an age in the Early Cretaceous Epoch or a stage in the Lower Cretaceous Series. It spans the time between 132.6 ± 2 Ma and 125.77 (million years ago). The Hauterivian is preceded by the Valanginian and succeeded by the Barremian.[3]