Weichselia reticulata Fontaine emend. Alvin 1971
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2023
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| _version_ | 1866902143219269632 |
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| author | Moreau, Jean-David Néraudeau, Didier |
| author_facet | Moreau, Jean-David Néraudeau, Didier |
| contents | <p><i>Weichselia reticulata</i> (Stokes & Webb, 1824) Fontaine emend. Alvin, 1971</p><p>(Fig. 3F, G)</p><p><i>Weichselia reticulata</i> Stokes & Webb, 1824: 423. – Alvin 1971: 27 [cum syn.].</p><p>MATERIAL. — Two specimens: IGR-23245_B; IGR-23247.</p><p>DESCRIPTION</p><p>The material consists of fragmented secondary pinnae (Fig. 3F, G). The largest pinna fragment (IGR-23247) is 20 mm long and 5 mm wide. The pinnae bear up to 230µm long and up to 165 µm wide alternate, entire, oblong and leathery pinnules. They are attached by a broad base to the rachis and display a rounded apex and an entire margin. The pinnules are slightly inclined forward, forming an angle of 60-70° with the rachis. Adjacent pinnules are not in contact between them, being inserted at 160-190 mm from each other. The main vein of pinnules is straight and ends before the apex. The secondary veins display anastomosing lateral venation forming a polygonal mesh.</p><p>REMARKS</p><p>The gross morphology of pinnules as well as the reticulate venation allow to ascribe these specimens to <i>Weichselia reticulata</i> which is a common fern in the Cretaceous floras from Europe (Blanco-Moreno <i>et al.</i> 2018). In Northern France, <i>W. reticulata</i> was previously reported from the Barremian-Aptian of the Paris Basin (Carpentier 1927, 1929; Deconinck <i>et al.</i> 2021). In Charente-Maritime, this fern was reported from the Cenomanian clay of the Puy-Puy Lagerstätte (Le Diouron 2005).</p> |
| format | Recurso digital |
| id | zenodo_https___doi_org_10_5281_zenodo_14226110 |
| institution | Zenodo |
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| publishDate | 2023 |
| publisher | Zenodo |
| record_format | zenodo |
| spellingShingle | Weichselia reticulata Fontaine emend. Alvin 1971 Moreau, Jean-David Néraudeau, Didier Biodiversity Taxonomy Plantae Tracheophyta Polypodiopsida Marattiales Weichseliaceae Weichselia Weichselia reticulata <p><i>Weichselia reticulata</i> (Stokes & Webb, 1824) Fontaine emend. Alvin, 1971</p><p>(Fig. 3F, G)</p><p><i>Weichselia reticulata</i> Stokes & Webb, 1824: 423. – Alvin 1971: 27 [cum syn.].</p><p>MATERIAL. — Two specimens: IGR-23245_B; IGR-23247.</p><p>DESCRIPTION</p><p>The material consists of fragmented secondary pinnae (Fig. 3F, G). The largest pinna fragment (IGR-23247) is 20 mm long and 5 mm wide. The pinnae bear up to 230µm long and up to 165 µm wide alternate, entire, oblong and leathery pinnules. They are attached by a broad base to the rachis and display a rounded apex and an entire margin. The pinnules are slightly inclined forward, forming an angle of 60-70° with the rachis. Adjacent pinnules are not in contact between them, being inserted at 160-190 mm from each other. The main vein of pinnules is straight and ends before the apex. The secondary veins display anastomosing lateral venation forming a polygonal mesh.</p><p>REMARKS</p><p>The gross morphology of pinnules as well as the reticulate venation allow to ascribe these specimens to <i>Weichselia reticulata</i> which is a common fern in the Cretaceous floras from Europe (Blanco-Moreno <i>et al.</i> 2018). In Northern France, <i>W. reticulata</i> was previously reported from the Barremian-Aptian of the Paris Basin (Carpentier 1927, 1929; Deconinck <i>et al.</i> 2021). In Charente-Maritime, this fern was reported from the Cenomanian clay of the Puy-Puy Lagerstätte (Le Diouron 2005).</p> |
| title | Weichselia reticulata Fontaine emend. Alvin 1971 |
| topic | Biodiversity Taxonomy Plantae Tracheophyta Polypodiopsida Marattiales Weichseliaceae Weichselia Weichselia reticulata |
| url | https://doi.org/10.5281/zenodo.14226110 |