Type
Subchron
Age range
167.58–167.53 Ma
Middle Jurassic
Bathonian
M41n.1n
M41n.1r
M41n.2n
167.582167.580167.578167.576167.574167.572167.570167.568167.566167.564167.562167.560167.558167.556167.554167.552167.550167.548167.546167.544167.542167.540167.538167.536167.534167.532167.530167.528