Paratingia wudensis Jun Wang bis, Pfefferk. et Bek
Plant Fossil Names Registry Number: PFN001956
Act LSID: urn:lsid:plantfossilnames.org:act:1956
Authors: J. Wang, H. W. Pfefferkorn & J. Bek
Rank: species
Reference: Wang, J., Pfefferkorn, H. W. & Bek, J. (2009): Paratingia wudensis sp. nov., a whole noeggerathialean plant preserved in an earliest Permian air fall tuff in Inner Mongolia, China. – American Journal of Botany 96(9): 1676–1689.
Page of description: 1678
Illustrations or figures: Figs 2–20
Types
Holotype PB20784, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China
Figures: fig. 15
Note: Paratypes: PB20776–20783 (figs 2–14, 16–20) housed in Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China.
Original diagnosis/description
Leaves with pinnules arranged in four rows, two on upper, adaxial side of rachis and two on lower, abaxial side; pinnules of upper rows larger, spread out in one plane, forming an open angle with the rachis, alternate or occasionally subopposite, with fine marginal teeth; pinnules in basal part of leaf elliptical and symmetrical with pointed apex; pinnules in middle and upper part of leaf elongate rhomboidal slightly asymmetrical with anadromously positioned tip; pinnules with open dichotomous venation, with three to five veins arising from base, forked one to three times before becoming parallel and reaching margin; pinnules of lower side smaller, directed forward at narrow angles to rachis, basally semiamplexicaulous, distally dissected into two narrow and long teeth. Strobilus cylinder-like, basally with stalk, sometimes forked apically; sporophylls disk-shaped surrounding cone axis, distal margin dissected into elongate, tapering segments or teeth, each sporophyll with one ring of sessile sporangia on adaxial side; sporangia ellipsoidal with pointed apex; microspores trilete, amb circular to triangular; laevigate exine, rays of trilete mark with labrum; secondary folds of exine present; megaspores with circular to subcircular amb; laevigate exine; secondary folds of exine present; with an equatorial bulge. Strobili and vegetative leaves attached to common axis/stem, forming crown.
Etymology
The species is named after the locality, the mining district of Wuda.
Stratigraphy
Permian, Cisuralian, Asselian
Volcanic tuff, 0.63 m thick, between No. 6 and No. 7 Coals of Wuda syncline, top of Taiyuan Formation, early Asselian
Locality
China
Trial strip mine opening at 39°28′53″N, 106°38′08″E, near Wuda, Inner Mongolia
Plant fossil remain
macro- and meso-fossils-embryophytes except wood
Comments
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