摘要
本文系统地描述了采自贵州关岭扒子场中三叠世坡段组、垄头组和竹杆坡组绒枝藻6属7种的特征及其层序。该绒枝藻植物群可分为3个生物带和3个亚带,即(1)Salpingoporellabazichangia生物带:①Teutloporella cf.triasina亚带,②Briarocladella polyporella亚带,③Strongylotubulla rectoid亚带;(2)Brachyteporella yinchacladia生物带;(3)Brachyteporellabrachycladia生物带。
A dasycladacean florula, consisting of 7 species belonging 6 genera, found from the Poduan Formation, Longtou Formation and Zhuganpo Formation, is described in the paper. The florula can be divided into 3 biozones and 3 subzones. The sequence of these zonations is listed ascendingly as follows : (1) Salpingoporella bazichangia biozone, preserved in upper part of Poduan Formation, Upper Anisic: ① Teutloporella cf. triasina Sub-zone; ② Briarocladella polyporella Subzone; ③ Strongylotubulla rectoid subzone. (2) Brachyteporella yinchacladia biozone, occurring at the bottom and top parts of Longtou Formation, Lower Ladinic. (3) Brachyteporella brachycladia biozone, only found in Zhuganpo Formation, Upper Latinic.
出处
《地球科学(中国地质大学学报)》
EI
CAS
CSCD
北大核心
1992年第5期503-511,T003,共10页
Earth Science-Journal of China University of Geosciences
关键词
中三叠世
绒枝藻科
藻类
植物群
Middle Triassic, dasycladaceae, bioconstructional ridge, Bazichang and Guanling.