Type
Subchron
Age range
168.85–168.73 Ma
Middle Jurassic
Bajocian
M42.2r
M42.3n
M42n.3r
168.85168.85168.84168.84168.84168.83168.82168.82168.81168.81168.81168.80168.79168.79168.78168.78168.78168.77168.76168.76168.75168.75168.75168.74168.74168.73168.72