An intrazonal group of dark calcareous soils high in clay and having mainly montmorillonitic type clay are called as:________? July 22, 2021October 13, 2020 by admin An intrazonal group of dark calcareous soils high in clay and having mainly montmorillonitic type clay are called as:________? A. Regur B. Ragour C. Montmorillosol D. Regosol