摘要

海拉尔盆地大磨拐河组所产孢粉化石分属于3个孢粉组合。下部孢粉组合以蕨类植物海金沙科孢子为主,重要分子有Cicatricosisporites australiensis,Cyathidites minor,C.gracilis,C.minutaestriatus,Appendicisporites problematicus,A.jonso-nii,Pilosisporites verus,Impardecispora apiverrucata,I.purverulenta,Triporoletes reticulates,Aequitriradites echinatus等;中部孢粉组合则以...