Late Triassic flora of the northern part of the Fore-Caspian depression(Kazakhstan)as exemplified by data from the S.Nurzhanov-509 borehole  

作　　者：S.V.Naugolnykh A.P.Pronin 

机构地区：[1]Geological Institute,Russian Academy of Sciences,Moscow 119017,Russia [2]Company Zhakhan,Atyrau,Kazakhstan

出　　处：《Global Geology》2022年第4期195-213,共19页世界地质（英文版）

基　　金：Supported by State Program of the Geological Institute of Russian Academy of Sciences(No.01201459177)。

摘　　要：The Late Triassic Nurzhanov flora is characterized on the basis of the material originated from the S.Nurzhanov-509 borehole disposed in the northern part of the Fore-Caspian depression,near the City of Atyrau,Republic of Kazakhstan.Taxonomic composition of the Nurzhanov flora includes equisetophytes Neocalamites sp.,ferns Phlebopteris hazarensis Naugolnykh et Pronin,Todites sp.,Cladophlebis sp.,ginkgophytes Ginkgoites spp.,conifers Podozamites sp.Palaeophytogeographic status of the Nurzhanov flora is discussed.According to the data obtained,this flora belongs to a transitional zone(an ecotonous belt),which existed between the Euro-Sinian and the Siberian-Canadian palaeofloristic realms during most of the Mesozoic time.

关 键 词：TRIASSIC PALAEOBOTANY equisetophytes FERNS CONIFERS palaeophytogeography 

分 类 号：Q914[天文地球—古生物学与地层学] P534.51[生物学—古生物学]