Type
Subchron
Age range
163.53–163.29 Ma
Middle Jurassic
Callovian
M36r
M37n.1n
M37n.1r
163.54163.53163.52163.51163.50163.49163.48163.47163.46163.45163.44163.43163.42163.41163.40163.39163.38163.37163.36163.35163.34163.33163.32163.31163.30163.29163.28