Karroo Supergroup  search
UFKarroo System
RTTriassic
 Jurassic
 Carboniferous
 Permian
 Africa
 Dwyka Formation
 South Africa
 Permian-Triassic boundary
 Beaufort Group
 Botswana
 Namibia
 Ecca Group
 Vryheid Formation
 Stormberg Series
SNFormerly the Karroo System: Carboniferous to Jurassic of Namibia and South Africa. Divided into Dwyka Formation, Ecca Group, Beaufort Group, and Stormberg Series. Before 1978, also search Karroo. Indexed with ages as applicable. Added to Thesaurus in 1993