Clarendonian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Miocene
 .....Clarendonian
RTmiddle Miocene
 upper Miocene
SNNorth America. Miocene, above Barstovian and below Hemphillian. Added to Thesaurus in 1985.