摘要
本文所研究的贵州紫云石头寨上二叠统长兴组—中三叠统新苑组牙形石,共计5属14种,其中Hindeodus julfensis在华南系首次发现。文中对下三叠统罗楼组上部—中三叠统新苑组下部共建立了3个牙形石带,它们是Neospathodus timorensis带、Neogondolella regale带和N.constricta带。其中N.regale在华南属首次报导。此外就N.timorensis带的时代归属作了讨论,认为该带应属早三叠世晚期。而N.regale带为安尼阶最下部的牙形石带。文中还对牙形石的生态作了初步探讨。
The conodonts of the Upper Permian Changxing Formation-Middle Triassic Xingyuan Formation from Shitouchia, Ziyun county, Guizhou province covered here total to 5 genera, 14 species, among which Hindeodus julfensis is discovered for the first time in the South China. Three conodont zones are established for the upper part of the Luolou Formation of the Lower Triassic and the lower part of the Xingyuan Formation of the Middle Triassic. They arc Neospathodus timorensis zonc,Neogondolella regale zone and Neogondolella con-strica zone, N.regale zone is published for the first time in the South China. Moreover, the age of N. timorensis is discussed. It is confirmed that this zone belongs to the late Early Triassic and N. regale zone to the lowest Anisian. In addition, The paper deals with preliminarily the conodont paleoecology.
出处
《地球科学（中国地质大学学报）》
EI
CAS
CSCD
北大核心
1990年第3期291-298,共8页
Earth Science-Journal of China University of Geosciences
基金
IGCP203项成果之一
得到国家自然科学基金资助
关键词
晚二叠世
中三叠世
牙形石动物群
shitouchia, Ziyun county, Guizhou province, Late Permian, Early Triassic, Middle Triassic, conodont fauna, ecology.
