Type
Subchron
Age range
161.89–161.81 Ma
Middle Jurassic
Callovian
M33r
M34n.1n
M34n.1r
161.89161.88161.88161.88161.87161.87161.86161.85161.85161.84161.84161.84161.83161.82161.82161.81161.81