Among the plant fossils collected by Messrs.K.C.Yang,S.Wang and S.F.Peng during the geological investigation in southeastern Shansi in 1954,thereare some considerable well-preserved specimens of Callipteridium-like frond whichappear referable to the present genus.Most of the specimens were found fromthe Shansi Series at several localities:Changtsun,Shihkutsun,and Chaochiakouof Luanhsien,a few very fragmentary specimens have also been gathered fromWuhsianghsien,S.E.Shansi.