▁Cy clo st igma ▁and ▁Le pt oph lo em ▁rh omb icum . ▁ ▁The ▁Ta oz ik eng ▁Form ation ▁also ▁contained ▁con gl omer ate ▁and ▁included ▁Sub le pid od end rum ▁foss ils . ▁ ▁Car bon ifer ous ▁The ▁L indi ▁Form ation ▁had ▁more ▁con gl omer ate ▁and ▁sand stone , ▁with ▁traces ▁of ▁lim estone ▁and ▁coal . ▁ ▁Plant ▁foss ils ▁include ▁Rh ode opter id ium ▁and ▁ne urop ter is . ▁ ▁The ▁H uan long ▁Form ation ▁contains ▁cl astic ▁lim estone ▁and ▁dol om ite ▁in ▁the ▁south west ▁region . ▁ ▁| There ▁are ▁F us ul id ▁foss ils ▁such ▁as ▁Prof us ul in ella , ▁F us ul in ella , ▁and ▁F us ul ina . ▁The ▁Ch u ans han ▁Form ation ▁has ▁b eds ▁of ▁lim estone ▁and ▁dol om ite . ▁ ▁Mont ip arus , ▁Tit ic ites ▁and ▁Pseud os ch w ager ina ▁foss ils ▁are ▁found ▁in ▁it . ▁ ▁Meanwhile , ▁in ▁the ▁Upper ▁Car bon ifer ous ▁mud stone ▁formed ▁in ▁the ▁n ortheast ▁of ▁the ▁province . ▁ ▁F oss ils ▁there ▁include ▁Ne osp ir ifer ▁a ▁bra chi op od ▁and ▁Ne ost aff ella . ▁ ▁Perm ian ▁The ▁Q ix ia ▁Form ation ▁contains ▁dark ▁grey ▁ch ert ▁inter bed ded ▁with ▁lim estone . ▁The ▁W en b ish an ▁Form ation ▁is ▁marine ▁mud stone ▁with ▁ph osph