Cordaites daviessensis Šimůnek

Plant Fossil Names Registry Number: PFN000358

Act LSID: urn:lsid:plantfossilnames.org:act:358

Rank: species

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

Types

Holotype 698232, National Museum of Natural History, Smithsonian Institution, Washington, D.C., United States
Figures: pl. IV, V

Note: cuticles prepared from holotype: Slides 438/1–10, SEM stub 37

Original diagnosis/description

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.

Etymology

After Daviess County, Indiana, U.S.A.

Stratigraphy

Carboniferous, Pennsylvanian
Staunton Formation, shales above Buffaloville coal bed, Early Westphalian D

Locality

United States
USNM38874; NERCO AMC South Pit, Daviess County, Indiana

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Comments

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