Type
Subchron
Age range
71.689–71.449 Ma
Late Cretaceous
Maastrichtian
C31r
C32n.1n
C32n.1r
71.6971.6871.6771.6671.6571.6471.6371.6271.6171.6071.5971.5871.5771.5671.5571.5471.5371.5271.5171.5071.4971.4871.4771.4671.4571.44