%0 Journal Article
%T OrdovicianTrilobitesfromKaipingBasin,Hopei
%J µØÖÊѧ±¨
%D 1949
%X I.INTRODUCTIONThroughthestudyoftheOrdovicianstratigraphyandpalaeontologyofNChinamadebyA.W.Grabau,Y.C.SunandF.F.Mathieu,majorstratigraphicsubdivisionswereestablished.In1922,GrabaumadeanextensivestudyoftheOrdovicianfossilsofNChina,chieflycephalopodsfromtheMachiakoulimestone.In1935,SunpublishedamonographOnthe
%U http://www.geojournals.cn/dzxb/ch/reader/view_abstract.aspx?file_no=1949Z108&flag=1