Dwyka Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...upper Paleozoic
 ....Dwyka Formation
UFDwyka Series
 Dwyka Tillite
RTTriassic
 Carboniferous
 Permian
 Africa
 Karroo Supergroup
 South Africa
 Botswana
 Namibia
 Zimbabwe
SNOf the Karroo Supergroup. Formerly referred to as Dwyka Series which included Upper Shales, Conglomerate (now Tillite), and Lower Shales. Indexed with ages as applicable. Added to Thesaurus in 1993.