Leaf cuticle ultrastructure of Pseudofrenelopsis dalatzensis (Chow et Tsao) Cao ex Zhou (Cheirolepidiaceae) from the Lower Cretaceous Dalazi Formation of Jilin, China》.pdfVIP

Review of Palaeobotany and Palynology 153 (2009) 8–18 Contents lists available at ScienceDirect Review of Palaeobotany and Palynology journal homepage: /locate/revpalbo Leaf cuticle ultrastructure of Pseudofrenelopsis dalatzensis (Chow et Tsao) Cao ex Zhou (Cheirolepidiaceae) from the Lower Cretaceous Dalazi Formation of Jilin, China Xiao-Ju Yang a,⁎, Gaëtan Guignard b, Frédéric Thévenard b, Yong-Dong Wang a, Georges Barale b a Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, 210008, China b Université de Lyon, F-69622, Lyon, France; Université Lyon 1, Villeurbanne; CNRS, UMR5125, Paléoenvironnements et Paléobiosphère A R T I C L E I N F O A B S T R A C T Article history: The cheirolepidiaceous conifer Pseudofrenelopsis dalatzensis from the Lower Cretaceous Dalazi Formation, Jilin Received 10 March 2008 Province, Northeast China is studied in detail based on abundant material. The gross morphology of vegetative Received in revised form 6 June 2008 shoots shows a greater variation than previously known. Additional information of microstructure is that the Accepted 9 June 2008 adaxial cuticle from the free part of leaves is also papillate as the abaxial cuticle. The excellent preservation of Available online 18 June 2008 cuticles allows for the first time in this family to four distinct types of cuticle in ultrastructural level: subsidiary cells, guard cells, epidermal cells with and