Type
Subchron
Age range
167.61–167.58 Ma
Middle Jurassic
Bathonian
M41n.1r
M41n.2n
M41n.2r
167.610167.608167.606167.604167.602167.600167.598167.596167.594167.592167.590167.588167.586167.584167.582167.580