First record of Cercidiphylloxylon (Cercidiphyllaceae) from the Palaeocene of Fushun,NE China

作     者：Dmitry GROMYKO Albert G.ABLAEV 

作者机构：Department of PalaeobotanyKomarov Botanical InstituteRussian Academy of Sciences V.I.Il'ichev Pacific Oceanological InstituteFar Eastern BranchRussian Academy of Sciences 

出 版 物：《Journal of Systematics and Evolution》 (植物分类学报(英文版))

年 卷 期：2010年第48卷第4期

页      面：302-308页

核心收录：

学科分类：070903[理学-古生物学与地层学(含：古人类学)] 0709[理学-地质学] 07[理学] 

基　　金：supported by the National Natural Science Foundation of China(Grant Nos 30470117,30770148, and 30530050) the National Natural Science Foundation of China and Russian Foundation for Basic Research(Coproject No.30911120047) the Chinese Academy of Sciences(Grant No.KSCX2-YW-Z-065) the Beijing Academy of Science and Technology(Grant No.IG200704C2) the International S&T Cooperation Project of China(Grant No.2009DFA32210) 

主　　题：Cercidiphylloxylon Cercidiphyllum fossil wood Fushun Palaeocene 

摘      要：Cercidiphylloxylon spenceri(Brett)Pearson is described from the Lizigou Formation,Palaeocene in *** growth rings are distinct;pores are diffuse,solitary,with somewhat angular outlines in cross section;vessel elements long with long scalariform perforation plates;intervessel pitting is opposite to scalariform;fibertracheids are present;axial parenchyma is scarce;rays are mostly biseriate and *** wood characters of the fossil specimen fall into the range of those of extant Cercidiphyllum(Cercidiphyllaceae).The finding is one of the earliest fossil wood records of Cercidiphyllaceae.