second age of the middle Jurassic
In the geologic timescale, the Bajocian is an age or stage in the Middle Jurassic. It lasted from approximately 170.3 Ma to around 168.3 Ma (million years ago). The Bajocian age succeeds the Aalenian age and precedes the Bathonian age.
- See for a detailed geologic timescale Gradstein et al. (2004)