【作者】 王成源；

【Author】 Wang Chengyuan (Nanjing Institute of Geology and Paleontology,Academia Sinica )

【机构】 中国科学院南京地质古生物研究所；

【摘要】 <正>近年来,随着我国地质事业的发展,我国早泥盆世地层及志留、泥盆系的分界,已引起广大地质工作者的重视。国际上,关于志留、泥盆系的分界已作出决议,即以笔石Monograptvsvniformis三叶虫Warburgella rugolosa rugolosa和牙形刺Icrlodus woschmidti的同时出现作为泥盆纪的开始。在欧洲,早泥盆世牙形刺分为7个带,北美分为6个带,牙形刺早更多还原

【Abstract】 The lowermost Devonian Conodonts have been reported for the first time in China from the Xiaputonggou Formation of Zoige County, Sichuan,Here are described 7 genera and 9 species in which Distacodus robustus is a new one.The conodont fauna,including mainly Icriodus woschmidti,Spathognathodus remscheidensis and Ozarkodina denckmanni, indicates a Gedinnian age.It is significant for the delineation of the Silurian—Devonian boundary in west Qinling Range.更多还原