Les plantes fossiles du gisement hettangien de Talmont-Saint-Hilaire (Vendée, France) : intérêts systématique et paléoécologique

  • The Liassic Talmont-Saint-Hilaire (Vendée, France) outcrop has been studied here according to the abundance of fossil plants of the Cheirolepidiaceous family (Gymnosperms, Coniferales). A new species of Brachyphyllum has been studied in light microscopy, even in scanning electron microscopy and transmission electron microscopy. It is, at that time, one of the most complete study realized on a fossil taxon. Epidermal cells, subsidiary cells and guard cells have been described on both adaxial and abaxial surfaces, in transversal and longitudinal sections. Cuticle ultrastructural variations have been observed between epidermal and stomatal cells. To conclude, we propose a discussion about the cuticle structure variations related to environmental conditions and the functional morphology of the different cells.

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Author:Frédéric Thévenard, Sylvie Deschamps, Gaëtan Guignard, Bernard Gomez
Parent Title (French):Le Naturaliste Vendéen
Document Type:Article
Date of Publication (online):2013/07/03
Year of first Publication:2003
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2013/07/03
Page Number:19
First Page:69
Last Page:87
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 56 Fossilien, Paläontologie / 560 Paläontologie; Paläozoologie
5 Naturwissenschaften und Mathematik / 58 Pflanzen (Botanik) / 580 Pflanzen (Botanik)
Sammlungen:Sammlung Biologie / Sondersammelgebiets-Volltexte
Zeitschriften / Jahresberichte:Naturaliste Vendéen / Le Naturaliste Vendéen, Numéro 3 (2003)
Licence (German):License LogoDeutsches Urheberrecht