La Tour du Valat

Institut de recherche pour la conservation des zones humides méditerranéennes

Titre :	First record of Glyptostroboxylon from the Upper Jurassic of Tendaguru, Tanzania
Auteurs :	Herbert Süss, Auteur ; Stephan Schultka, Auteur
Type de document :	Article
Dans :	Botanical Journal of the Linnean Society (135(4) 2001-04-01)
Article en page(s) :	421-429
Résumé :	A fusainized axis collected by Janensch and others during the German Tendaguru Expeditions of 1909–1913 is identified as a new species of Glyptostroboxylon Conwentz. A detailed description of this species, recorded from the Upper Jurassic of East Africa, is given. Structures in the walls of ray cells are interpreted as plasmodesmata and details in the lumina of tracheids are interpreted as residues of protoplasm resulting from the breakdown of intravacuolar cytoplasm. Our knowledge of the Upper Jurassic flora of Tendaguru reflects an expected dominance of gymnosperms, primarily represented here by conifers. This seems to be consistent with a general trend in late mesophytic Gondwana floras, but is likely to be the result of taphonomic processes and sampling procedures. Current ecological interpretations are thus very doubtful.
En ligne :	https://doi.org/10.1111/j.1095-8339.2001.tb00792.x

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