The Callovian is a stage on the geologic time scale occurring 164.7 ± 4.0 Ma to 161.2 ± 4.0 Ma (million years ago). It is the last stage of the Middle Jurassic.

The stage takes its name from an old spelling of Kellaways Bridge, 3 km north-east of Chippenham in Wiltshire, England.


During the Callovian, Europe was an island chain.

Jurassic period
Lower/Early Jurassic
Middle Jurassic
Upper/Late Jurassic
Hettangian | Sinemurian
Pliensbachian | Toarcian
Aalenian | Bajocian
Bathonian | Callovian
Oxfordian | Kimmeridgian
Mantell's Iguanodon restoration

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