Cordaites rudnicensis Šimůnek
Plant Fossil Names Registry Number: PFN000406
Act LSID: urn:lsid:plantfossilnames.org:act:406
Authors: Z. Šimůnek
Reference: Šimůnek, Z. (2007): Genus Cordaites from the Carboniferous and Permian of the Bohemian Massif (Epidermal structure study). – Acta Musei Nationalis Pragae, Series B – Historia Naturalis 62(2006)(3–4): 97–210., link
Page of description: 115
Illustrations or figures: text-figs 1f–h, j, 17a–f; pl. 2 figs 7, 8, pl. 10
Holotype ZŠ 207, Czech Geological Survey, Prague, the Czech Republic
Figures: pl. 2 figs 7, 8
Medium-large, lanceolate, amphistomatic leaves with rounded to blunt apices and infrequent parallel venation. Three to five thin veins alternate with each thick vein. Adaxial cuticle with oblong, square and trapezoidal cells, stomata dispersed in infrequent, poorly defined rows. Abaxial cuticle with oblong, pentagonal cells, stomata dispersed in infrequent ill-defined rows. There are 2 small rounded polar subsidiary cells, and 2 semicirculate lateral subsidiary cells.
From the Rudník Horizon, which is the type horizon of this species.
Vrchlabí Formation, Rudník Horizon, layers 1, 7 and 9 (sensu Šimůnek, Drábková and Zajíc 1990); Permian, Lower Autunian
Vrchlabí, road cut west from the town, Krkonoše Piedmont Basin
Plant fossil remain
macro- and meso-fossils-embryophytes except wood