Uonuma Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Uonuma Group
RTLower Pleistocene
 upper Pliocene
 Honshu
 Japan
SNUpper Pliocene to lower Pleistocene. Composed of Oguni and Tsukayama formations. In NW Honshu. Indexed with ages as applicable.