Type
Subchron
Age range
170.62–170.22 Ma
Middle Jurassic
Bajocian
M44n.1n
M44n.1r
M44n.2n
170.62170.60170.58170.56170.54170.52170.50170.48170.46170.44170.42170.40170.38170.36170.34170.32170.30170.28170.26170.24170.22