Tenchovia bulgariaensis Pšenička et Bek

Plant Fossil Names Registry Number: PFN000320

Act LSID: urn:lsid:plantfossilnames.org:act:320

Authors: J. Pšenička & J. Bek

Rank: species

Genus: Tenchovia Pšenička et Bek

Reference: Pšenička, J. & Bek, J. (2004): Techovia bulgarensis gen. et sp. nov. from the Pennsylvanian of the Dobrudzha Coalfield, Bulgaria. – Geologica Balcanica 34(1–2): 69–76., link

Page of description: 72

Illustrations or figures: pl. I. figs 1–11; pl. 2, figs 1–9

Name is type for

Tenchovia Pšenička et Bek 2004


Holotype No. 15871, Geological Institute, Bulgarian Academy of Sciences, Sofia, Bulgaria
Figures: pl. I, figs 1, 2

Note: The slides prepared from this specimen are also stored in the Geological Institute, Sofia.

Original diagnosis/description

Penultimate rachis 0.6 mm wide, naked, very slightly undulate. Ultimate pinnae narrow, more or less triangular in the shape, gradually attenuate toward the apex. Ultimate rachises slightly sinusoid, 0.4 mm wide. Pinnules, 2-4 mm long and 1-2.5 mm wide. The pinnule possesses margin lobate. Midvein prominent, divided at distal end of pinnules. Lateral veins bifurcate once, ending in lobes. Pinnules rarely covered by uniseriate multicellular trichomes. Sori contain 4-6 (usually 5) sporangia, about 330 μm in diameter. Lateral annulus consists of elongate cells 50-120 μm long and 20-30 μm wide. Stomium consists of cells 80-200 μm long and 5-10 μm wide. Ordinary cells of annulus polygonal, thin-walled, 80-120 μm in diameter.


Named after Bulgaria, where the holotype was found.


Borehole No. 202 at depth 1539 m (Makedonka C Formation, about 110 m above coal seam m5, Bolsovian Stage)


Dobrudzha Coalfield (Bulgaria), Westphalian

Plant fossil remain

macro- and meso-fossils-embryophytes except wood


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