Cordaites daviessensis Šimůnek
Plant Fossil Names Registry Number: PFN000358
Act LSID: urn:lsid:plantfossilnames.org:act:358
Authors: Z. Šimůnek
Reference: Šimůnek, Z. (2018): Cuticular analysis of new Westphalian and Stephanian Cordaites species from the USA. – Review of Palaeobotany and Palynology 253: 1–14.
Page of description: 4
Illustrations or figures: figs 1b, 2c; pls IV, V
Holotype 698232, United States National Museum, Washington, USA
Figures: pl. IV, V
Note: cuticles prepared from holotype: Slides 438/1–10, SEM stub 37
Lanceolate leaf with parallel margins and fine venation. Stomata on adaxial cuticle in incomplete stomatal rows, guard cells with swallowtail polar endings, lateral subsidiary cells oblong or trapezoid, small polar subsidiary cells more-or-less rhomboidal. Stomata on abaxial cuticle in stomatiferous bands, guard cells with swallowtail polar endings, lateral subsidiary cells more-or-less reniform or irregular, polar subsidiary cells relatively large, circular to oval. Much higher stomatal density on abaxial cuticle than on adaxial.
After Daviess County, Indiana, U.S.A.
Staunton Formation, shales above Buffaloville coal bed, Early Westphalian D
USNM38874; NERCO AMC South Pit, Daviess County, Indiana
Plant fossil remain
macro- and meso-fossils-embryophytes except wood