摘要
通过对关岭动物群产出层位瓦窑组及其下伏地层竹杆坡组采集到的牙形石样品进行处理 ,得到典型牙形石带分子Paragondolellapolygnathiformis和Paragondolellatadpole。经对比 ,可知竹杆坡组顶部和瓦窑组的时代为晚三叠世卡尼期中期或晚期 ,而不是中三叠世拉丁期 ,从而表明关岭动物群的时代是晚三叠世卡尼中—晚期。
Samples collected from the Wayao Formation,which yields the Guanling Fauna,and the underling formation,the Zhuganpo Formation,were treated for conodont analysis.The study result shows that two conodont zones,Paragondolella polygnathiformis-P.tadpole Assemblage Zone and the P.polygnathiformis Zone can be recognized.Comparing with the international and domestic related information,a conclusion can be drawn that their epoch should belong to the Middle or Late Carnian of the Late Triassic.So the final result indicates that the age of the Guanling Fauna belong to the middle Carnian of the Late Triassic,maybe the late Carnian,not to the Ladinian of the Middle Triassic.
出处
《北京大学学报（自然科学版）》
CAS
CSCD
北大核心
2003年第1期118-125,共8页
Acta Scientiarum Naturalium Universitatis Pekinensis
基金
教育部重点 (0 10 0 6 )
北京大学"创世界一流大学计划"资助项目
