Cordaites olneyensis Šimůnek

Plant Fossil Names Registry Number: PFN000357


Author: Z. Šimůnek

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: 2

Illustrations or figures: fig. 1a; pls I–III


Holotype 698230, National Museum of Natural History, Smithsonian Institution, Washington, D.C., United States
Figures: pl. I, fig. 2, 2a

Note: Šimůnek (Rev. Palaeobot. Palynol., 253: 2) states:
"Holotype: USNM specimen 698230 designated here on Pl. I, Fig. 2, and cuticles prepared from it. Slides 426/1–9 figured on Pl. I, Figs. 4 and 5, Pl. II, Figs. 1–3, SEM stub: 31."
But all cuticular details on plates I–III based on slides 426 and SEM stub 31 are assigned to the specimen 698229 in the plates' captions.

Original diagnosis/description

Large lanceolate leaveswith fine parallel venation. Adaxial and abaxial cuticles do not differ morphologically in a substantial way. Stomatal rows are prominent, guard cells with swallowtail polar endings, lateral subsidiary cells more-or-less oblong, polar subsidiary cells small, rounded to oval.


Olney village, Richland County, Illinois, U.S.A.


Carboniferous, Pennsylvanian
Basal limestone of Shumway Cyclothem, informally named the “Lake Sara Limestone”, Mattoon Formation, McLeansboro Group, Late Pennsylvanian (equivalent to Stephanian).


United States
USNM 38882; near Olney, Richland County, Illinois

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


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