Type
Subchron
Age range
151.21–151.17 Ma
Late Jurassic
Kimmeridgian
M22n.1r
M22n.2n
M22n.2r
151.210151.208151.206151.204151.202151.200151.198151.196151.194151.192151.190151.188151.186151.184151.182151.180151.178151.176151.174151.172151.170