Cordaites minshallensis Šimůnek

Plant Fossil Names Registry Number: PFN000360

Act LSID: urn:lsid:plantfossilnames.org:act:360

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: 9

Illustrations or figures: figs 1d, 2b; pls VIII, IX

Types

Holotype 698234, National Museum of Natural History, Smithsonian Institution, Washington, D.C., United States
Figures: pl. VIII, IX

Note: slides prepared from holotype: 344/1–3

Original diagnosis/description

Lanceolate leaves with parallel margins. Venation fine, small difference between “thick” vascular strands and “thin” sclerenchymatous bundles. Stomatal complexes on adaxial cuticle prominent, isolated, formed of two reniform lateral, and two small polar subsidiary cells. Stomatal complexes on abaxial cuticle arranged in stomatiferous bands. Lateral subsidiary cells gibbous, typically reniform. Polar subsidiary cells small, more-or-less rounded. Circular crypt developed above the stomatal opening.

Etymology

After the Minshall coal bed of Indiana, USA.

Stratigraphy

Carboniferous, Pennsylvanian
Shales belowtheMinshall coal bed, Brazil Formation, Bolsovian

Locality

United States
USNM 38878; Brazil Coal and Clay Company, Saline Pit #1, Clay County, Indiana

Plant fossil remain

macro- and meso-fossils-embryophytes except wood

Comments

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