SEARCH Articles Figures Tables Australian permian Carboniferous Permian Glaciations Carboniferous-Permian Permian Basin Permian Lower, Germany Permian Sedimentary Rocks Permian Triassic boundary event Permian Upper Permian coals Permian coals, Australian Permian extinctions Permian flora Permian period Permian rocks Permian sedimentation Permian sediments Permian-Triassic transition Phosphorites Permian Phosphoria formation