Type
Age
Age range
13.6–10.3 Ma
Miocene
Tortonian
Serravallian
Hemphillian
Clarendonian
Barstovian
Hemphillian
Clarendonian
Barstovian
13.613.413.213.012.812.612.412.212.011.811.611.411.211.010.810.610.410.2