Potoniea krisiae Pšenička, Zodrow et Bek

Plant Fossil Names Registry Number: PFN000854

Act LSID: urn:lsid:plantfossilnames.org:act:854

Authors: J. Pšenička, E. L. Zodrow & J. Bek

Rank: species

Reference: Pšenička, J., Zodrow, E. L. & Bek, J. (2019): The compound synangial organ Potoniea krisiae sp. nov. and its plausible relationship with linopterids based on cuticles from the Late Pennsylvanian Sydney Coalfield, Canada. – International Journal of Coal Geology 210: 103200 (10 pp.).

Page of description: 2

Illustrations or figures: figs 2–4

Types

Original diagnosis/description

Compound synangial organ, circular or irregular-square-ellipsoid, 15–20 mm wide. Organ attached by an excentrally positioned, narrow (0.3 mm) stalk consists of a conical part and a thick proximal cap, both with small swollen structures and a synangial proximal part. Proximal cap and outer cover vascularized, veins dichotomizing several times. Synangia, consisting of five to six cylindrical sporangia, are arranged in concentric rows. Sporangia ca. 2 mm long and 0.5 mm wide. Free sporangial tips extending from the distal surface of the organ. Sporangial dehiscence zone located along a line that presumably runs down the inner face. Trilete circular to oval microspores, exine granulate, verrucate to irregularly rugulate.

Stratigraphy

Carboniferous, Pennsylvanian, Moscovian
Lloyd Cove Seam, late Moscovian (Cantabrian)

Locality

Canada
Brogan's open-pit coal mine, Sydney Coalfield, Cape Breton Island, Nova Scotia