IODP SEDIS - Thesaurus -

Gondwana System
NT	lower Gondwana System
	upper Gondwana System
RT	Triassic
	Lower Jurassic
	Permian
	India
	Upper Carboniferous
	Permian-Triassic boundary
SN	Upper Carboniferous to Lower Cretaceous. Peninsular India. Indexed with ages as applicable.