Aptian
's information is
Birth and death years unknown
The Aptian is an age in the geologic timescale or a stage in the stratigraphic column. It is a subdivision of the Early or Lower Cretaceous Epoch or Series and encompasses the time from 121.4 ± 0.6 Ma to 113.2 ± 0.3 Ma (million years ago), approximately. The Aptian succeeds the Barremian and precedes the Albian, all part of the Lower/Early Cretaceous. The Aptian partly overlaps the upper part of t
* Calculated from Wikipedia data.
Accuracy is not guaranteed.
| Aptian | |||||||||
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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 | Not formally defined | ||||||||
| Lower boundary definition candidates |
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| Lower boundary GSSP candidate section(s) | Gorgo a Cerbara, Piobbico, Central Apennines, Italy | ||||||||
| Upper boundary definition | FAD of the Planktonic Foraminifer Microhedbergella renilaevis | ||||||||
| Upper boundary GSSP | Col de Pré-Guittard section, Arnayon, Drôme, France 44°30′28″N 5°17′50″E / 44.5079°N 5.2973°E | ||||||||
| Upper GSSP ratified | April 2016 | ||||||||
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