Krol Formation  search
RTProterozoic
 Cambrian
 Carboniferous
 Permian
 India
 Uttar Pradesh India
 Himalayas
SNHas been variously considered as Permian and Upper Carboniferous; more recent literature has assigned it to the Proterozoic? and Cambrian. Himalayas of India. Indexed with ages as applicable. Added to Thesaurus in 1993.