Ufadendron elongatum sp. nov., an Angaran Lycopsid from the Upper Permian of Inner Mongolia, China  

作　　者：Zhen Tang Yi Zhang Serge VNaugolnykh Changqing Zheng Lu Shi Tao Qin Junhao Huang 

机构地区：[1]College of Earth Sciences,Jilin University,Changchun 130061,China [2]Shenyang Center of Geological Survey,China Geological Survey,Shenyang 110034,China [3]College of Paleontology,Shenyang Normal University,Shenyang 110034,China [4]Key L aboratory for Evolution of Past Life in Northeast Asia,Ministry of Natural Resources,Shenyang 110034,China [5]Geological Institute,Russian Academy of Sciences,Moscow 119017,Russia [6]Kazan Federal University,Kazan 420000,Russia

出　　处：《Journal of Earth Science》2020年第1期1-8,共8页地球科学学刊（英文版）

基　　金：financially supported by the Geological Survey of China(No.DD20160048-02);the National Natural Science Foundation of China(No.31470324);the Project 111 of China(No.B06008);the Doctoral Fund of Shenyang Normal University(No.054/55440109030)supported by the State Program(Geological Institute,Russian Acad.Sci.)(No.0135-2019-0044);the Russian Government to support the Program of Competitive Growth of Kazan Federal University among World’s Leading Academic Centers

摘　　要：A new species Ufadendron elongatum sp.nov.,attributed to the family Tomiodendraceae Naugolnykh,is represented by two well-preserved stems in the collection under study.This new species was recently discovered from the Upper Permian Linxi Formation in the Jalaid locality,the Inner Mongolia Autonomous region,China.The genus Ufadendron is characterized as having the long fusiform leaf cushions,with small and rounded leaf scar containing a central point-like scar which is situated at the upper part of leaf cushion;the infrafoliar bladder of fusiform shape positioned in the middle part of leaf cushion;the wings and heel well-developed in the lateral parts and the lower part of leaf cushion,respectively.The new species is different from the type species U.ufaense(Naugolnykh 2014)collected from the Lower Permian of the Cis-Urals,western limits of Angaraland,in the elongated leaf cushion and in the well-pronounced heel.It should be noted,that a vascular bundle(conductive strand)occupied the middle part of the central point-like scar.So far,only 5 genera of Angaran elements among lycopsids have been discovered in the region geographically belonging to Angaran Realm(Phytogeoprovince)in China.The new species U.elongatum not only enlarges our knowledge on the taxonomy of Tomiodendraceae lycopsids,and also provides an opportunity to understand the difference between Angaran and Cathaysian floras in paleoclimatic context.A new species Ufadendron elongatum sp. nov., attributed to the family Tomiodendraceae Naugolnykh, is represented by two well-preserved stems in the collection under study. This new species was recently discovered from the Upper Permian Linxi Formation in the Jalaid locality, the Inner Mongolia Autonomous region, China. The genus Ufadendron is characterized as having the long fusiform leaf cushions, with small and rounded leaf scar containing a central point-like scar which is situated at the upper part of leaf cushion; the infrafoliar bladder of fusiform shape positioned in the middle part of leaf cushion; the wings and heel well-developed in the lateral parts and the lower part of leaf cushion, respectively. The new species is different from the type species U. ufaense(Naugolnykh 2014) collected from the Lower Permian of the Cis-Urals, western limits of Angaraland, in the elongated leaf cushion and in the well-pronounced heel. It should be noted, that a vascular bundle(conductive strand) occupied the middle part of the central point-like scar. So far, only 5 genera of Angaran elements among lycopsids have been discovered in the region geographically belonging to Angaran Realm(Phytogeoprovince) in China. The new species U. elongatum not only enlarges our knowledge on the taxonomy of Tomiodendraceae lycopsids, and also provides an opportunity to understand the difference between Angaran and Cathaysian floras in paleoclimatic context.

关 键 词：Ufadendron Linxi Formation Upper Permian Angaran lycopsids China 

分 类 号：Q949[生物学—植物学]