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

作　　者：Wen-Yi GUO Jian YANG Dmitry GROMYKO Albert G. ABLAEV Qing WANG Cheng-Sen LI 

机构地区：[1]State Key Laboratory of Systematic and Evolutionary Botany, Institute of Botany Chinese Academy of Sciences, Beijing 100093, China [2]Department of Palaeobotany, Komarov Botanical Institute, Russian Academy of Sciences, St. Petersburg 197376, Russia [3]V.I. II ＇iehev Pacific Oceanological Institute, Far Eastern Branch, Russian Academy of Sciences, Vladivostok 690041, Russia [4]Beijing Radiation Center, Beijing 100875, China [5]Beijing Museum of Natural History, Beijing 100050, China [6]Graduate University, Chinese Academy of Seiences, Beijing 100049, China

出　　处：《Journal of Systematics and Evolution》2010年第4期302-308,共7页植物分类学报（英文版）

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)

摘　　要：Cercidiphylloxylon spenceri （Brett） Pearson is described from the Lizigou Formation, Palaeocene in China. The growth tings 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 heterogeneous. All 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.Cercidiphylloxylon spenceri （Brett） Pearson is described from the Lizigou Formation, Palaeocene in China. The growth tings 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 heterogeneous. All 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.

关 键 词：Cercidiphylloxylon Cercidiphyllum fossil wood Fushun Palaeocene. 

分 类 号：Q944.5[生物学—植物学] P534.612[天文地球—古生物学与地层学]