Type
Subchron
Age range
168.65–168.56 Ma
Middle Jurassic
Bajocian
M42n.1r
M42n.2n
M42.2r
168.65168.65168.64168.63168.63168.63168.62168.62168.61168.60168.60168.59168.59168.59168.58168.57168.57168.56168.56