Type
Subchron
Age range
170.22–169.99 Ma
Middle Jurassic
Bajocian
M43r
M44n.1n
M44n.1r
170.23170.22170.21170.20170.19170.18170.17170.16170.15170.14170.13170.12170.11170.10170.09170.08170.07170.06170.05170.04170.03170.02170.01170.00169.99169.98