lower Pliocene  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Pliocene
 .....lower Pliocene
NTEllensburg Formation
 Gilbert Chron
 Plaisancian
 Tabianian
RTupper Pliocene
 middle Pliocene
 Capistrano Formation
 Yakima Basalt
 Hemphillian
 Pannonian
 Ridge Route Formation