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
Geologic timespan.strat_unit: Stage
Geologic timespan.timespan_formality: Formal
Geologic timespan.lower_boundary_def: FAD of the Ammonite genus Kepplerites
Geologic timespan.lower_gssp_candidates: Pfeffingen, Swabian Alb, Germany Russia
Geologic timespan.upper_boundary_def: FAD of ammonite species Brightia thuouxensis
Geologic timespan.upper_gssp_candidates: Redcliff Point, Dorset, UK Savouron, Provence, France

via Wikipedia infobox

Wikidata facts

Show 4 more facts

end time: 163500000-
Commons category: Callovian
sRGB color hex triplet: AEE6F0
start time: 166100000-

Sources (1)

wikidata.org

via Wikidata · CC0

~3 min read

Article

6 sections

Contents

Stratigraphic definitions
Subdivision
Palaeogeography
References
Literature
External links

==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.