Lower Cretaceous angio-sperm leaf from Wuhe in Anhui,China  

作　　者：LI Haomin Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, China 

出　　处：《Chinese Science Bulletin》2003年第6期611-614,共4页

基　　金：supported by the National Natural Science Foundation of China(Grant No.39930020);State Key Laboratory of Palaeobiology and Stratigrapby(Nanjing Institute of Geology and Palaeontology,CAS)(Grant No.013106).

摘　　要：A new early angiosperm leaf species is reported from the Xinzhuang Formation in Wuhe County, Anhui Province. It is probably of Barremian or slightly later in geological age. The fossil leaf is small, no more than 0.6 cm both in length and in width. The leaf veins are well preserved and clearly visible under a low power microscope. Leaf ar-chitectural analysis shows that such a leaf should belong to the first leaf rank of Hickey, i.e. the most primitive one. There are no early angiosperm leaves published completely similar to ours. A new species name of Dicotylophyllum minutissimum sp. nov. is established for the present leaf fos-sils.A new early angiosperm leaf species is reported from the Xinzhuang Formation in Wuhe County, Anhui Province. It is probably of Barremian or slightly later in geological age. The fossil leaf is small, no more than 0.6 cm both in length and in width. The leaf veins are well preserved and clearly visible under a low power microscope. Leaf ar-chitectural analysis shows that such a leaf should belong to the first leaf rank of Hickey, i.e. the most primitive one. There are no early angiosperm leaves published completely similar to ours. A new species name of Dicotylophyllum minutissimum sp. nov. is established for the present leaf fos-sils.

关 键 词：安徽 下白垩统 早期被子植物 叶片结构 叶片化石 

分 类 号：Q914[天文地球—古生物学与地层学]