Doneggia complura G.W.Rothwell

Plant Fossil Names Registry Number: PFN002656


Author: G. W. Rothwell

Rank: species

Genus: Doneggia G.W.Rothwell

Reference: Rothwell, G. W. (1978): Doneggia complura gen. et sp. nov., a filicalean fern from the Upper Pennsylvanian of Ohio. – Canadian Journal of Botany 56(24): 3096–3104., link

Page of description: 3097

Illustrations or figures: figs 1–22

Name is type for

Doneggia G.W.Rothwell 1978


Holotype slide nos 193, 369–275, Paleobotanical Herbarium, Ohio University, Athens, Ohio, USA
Figures: fig. 2

Note: Holotype: Slides and peels of specimen in Ohio University coal ball 552G top. Slide Nos. 193, 369–275.

Paratypes: Additional specimens in Ohio University coal balls 552G, not figused; 552E, Figs. 3, 7, 19; 552F, Figs. 1, 4, 6; 1217K, not figured; 1379G(1), Figs. 12, 13, 14, 15, 17, 18, 21, 22; 1379H(1), Figs. 8, 9, 10, 1 1, 16, 20. Paratypes are slide Nos. 192, 194–268, 276–355 in the Paleobotanical Herbarium, Ohio University.

Original diagnosis/description

Characters of the species as those of the genus. Pinnae with two longitudinally disposed ridges at the adaxial surface. Pinnules lobed with revolute margins, about 25–35 sporangia per sorus. Sporangia up to 0.6 mm long and 0.45 mm in maximum diameter. Stalk three to five cells long, four cells wide. Spores 45–63 μm in diameter with arms of the trilete that extend across two-thirds to three-quarters of the proximal surface; exine psilate-levigate or gently undulating.


The specific epithet complura (Latin, complura = several) refers to the numerous sposangia that comprise each sorus.


Carboniferous, Pennsylvanian
Late Pennsylvanian, Duquesne coal, Duquesne cyclothem, Conemaugh group


United States
South side of Ohio Route 22 (NE¼, SE¼, SE¼, Section 6 Wayne Township, Jefferson County), appsoximately 8 km west of Steubenville, Ohio

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


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