本文選題：生物地層　切入點：線形植物化石　出處：《地層學雜志》2017年04期

【摘要】：四川廣元地區(qū)志留紀晚期車家壩組以碎屑巖沉積為主,產出牙形刺、腕足類、幾丁蟲、三縫孢、隱孢子、植物類表皮等化石,具有可靠地質時代證據(jù);對該組的進一步研究,為揚子區(qū)志留紀晚期地層劃分和對比研究提供了標桿。首次報道了車家壩組下部發(fā)現(xiàn)的線形植物化石,確定該植物代表的時代為志留紀晚期。根據(jù)揚子區(qū)多個產地的志留紀晚期線形植物和蟲管遺跡化石,結合巖性變化,認為:在揚子區(qū),野外確定志留紀晚期地層的化石識別標志有2個,即大量蟲管遺跡化石和線形植物化石。
[Abstract]:The late Silurian Chejiaba formation in Guangyuan, Sichuan Province, is dominated by clastic rock deposits, producing conodonts, brachiopods, chitin worms, trisporium, cryptospores, plant epidermis and other fossils, which have reliable geological age evidences.It provides a benchmark for late Silurian stratigraphic division and correlation study in Yangzi area.The fossils of linear plants found in the lower part of the Chejiaba formation are reported for the first time, and the representative age of this plant is the late Silurian.According to the trace fossils of late Silurian linear plants and insect tubules from many places of origin in Yangzi area, combined with the lithologic changes, it is considered that there are two fossil identification markers for determining the late Silurian strata in the Yangzi area in the field.That is, a large number of fossils of insect tube remains and linear plant fossils.
【作者單位】： 現(xiàn)代古生物學和地層學國家重點實驗室中國科學院南京地質古生物研究所;北京大學地球與空間科學學院;
【基金】：國家自然科學基金委(No.41530103,41221001,41290260) 中國科學院B類先導培育項目(XDPB 05)資助
【分類號】：P534.43;Q914
，

本文編號：1689060