Callovian
Also known as Callovian Stage, Callovian Age
In the geologic timescale, the Callovian is an age and stage in the Middle Jurassic, lasting between 165.3 ± 1.1 Ma (million years ago) and 161.5 ± 1.0 Ma. It is the last stage of the Middle Jurassic, following the Bathonian and preceding the Oxfordian.
Key facts
- Geologic timespan.name
- Callovian
- Geologic timespan.color
- Callovian
- Geologic timespan.time_start
- 165.3
- Geologic timespan.time_start_uncertainty
- 1.1
- Geologic timespan.time_end
- 161.5
- Geologic timespan.time_end_uncertainty
- 1.0
- Geologic timespan.timeline
- Jurassic
- Geologic timespan.name_formality
- Formal
- Geologic timespan.celestial_body
- earth
- Geologic timespan.usage
- Global (ICS)
- Geologic timespan.timescales_used
- ICS Time Scale
- Geologic timespan.chrono_unit
- Age
Article
6 sectionsContents
- Stratigraphic definitions
- Subdivision
- Palaeogeography
- References
- Literature
- External links
In the geologic timescale, the Callovian is an age and stage in the Middle Jurassic, lasting between 165.3 ± 1.1 Ma (million years ago) and 161.5 ± 1.0 Ma. It is the last stage of the Middle Jurassic, following the Bathonian and preceding the Oxfordian.
==Stratigraphic definitions== The Callovian Stage was first described by French palaeontologist Alcide d'Orbigny in 1852. Its name derives from the Latinized name for Kellaways Bridge, a small hamlet 3 km north-east of Chippenham, Wiltshire, England.