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An early record of a vesselless angiosperm from the middle Cenomanian of the Envigne valley (Vienne, Western France)

In: IAWA Journal
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  • 1 CR2P, UMR7207, MNHN, Sorbonne Université, CNRS, 57 rue Cuvier, CP 48, 75005 Paris, France.
  • | 2 LGL, UMR 5276, Université Lyon 1, 69622 Villeurbanne, France.
  • | 3 PALEVOPRIM, UMR7262 CNRS INEE, Université de Poitiers, 6 rue Michel-Brunet, 86073 Poitiers cedex, France.
  • | 4 81 Avenue Jean Mermoz, 86100 Châtellerault, France.
  • | 5 Palaios, Research Association, 86300 Valdivienne, France.
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ABSTRACT

Thousands of silicified wood fragments were recently collected from the middle Cenomanian of Vienne in western France at less than 10 km away from a historical locality where in 1870 the French geologist Alphonse Le Touzé de Longuemar reported silicified wood. The plant assemblage is very diverse, and includes several species of ferns, conifers, and angiosperms. We describe and discuss the systematic affinities of a new vesselless angiosperm. Many of its characters are shared by extant and fossil Winteraceae. Nevertheless, the absence of uniseriate rays makes the anatomy of these specimens unique. Its combination of characters justifies the establishment of a new genus of vesselless fossil angiosperm wood of uncertain affinity, Sherwinoxylon gen. nov.

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