Everton Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Middle Ordovician
 .....Everton Formation
RTMissouri
 Arkansas
SNIn Buffalo River Group. Includes Calico Rock Sandstone Member, Kings River Member, Newton Sandstone Member. N Arkansas, and S Missouri.