lower Miocene  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Miocene
 .....lower Miocene
NTAltonian
 Aquitanian
 Awamoan
 Burdigalian
 Chipola Formation
 Eggenburgian
 Hemingfordian
 Kasauli Series
 lower Badenian
 Ottnangian
 Saucesian
 Waitemata Group
RTAnahuac Formation
 Arikaree Group
 Arikareean
 Badenian
 middle Miocene
 upper Miocene
 Grande Ronde Basalt
 John Day Formation
 Relizian
 Vaqueros Formation