%0 Journal Article %T Shell concentrations analysis in the Lower Permian carbonate rocks (Khan Formation) in Central Iran (Kalmard area) %A S.Taghdisi Nikbakht %A P.Rezaee %A Moussavi Harami, Sayyed Reza %A Khanehbad, Mohammad %J Historical Biology %@ 0891-2963 %D 2018