%0 Journal Article
%T THEMIOCENEANDRECENTMOLLUSCAOFPANAMABAY
%A 李之常
%J 地质学报
%D 1930
%X INTRODUCTIONThematerialstudiedhasbeeninthePaleontogicalcollectionofColumbiaUniversityforseveralyears.Thelabelonthematerialreadsasfollows:"Broughtupbymarinedredgefromdepthsvaryingfrom10.ft.to40.ft.inthemudatthemouthoftheRioGrandenearLaBocaaboutonemilefrom
%U http://www.geojournals.cn/dzxb/ch/reader/view_abstract.aspx?file_no=19300325&flag=1