Paratingia wuhaia

Name

Paratingia wuhaia

Rank

Species

Generic Name

[Genus] Paratingia

Authors (Pub.)

Wang J. Hilton J. Pfefferkorn H. W. Wang S.-J. Zhang Y. Bek J. Pšenička J. Seyfullah L. J. Dilcher D. L.  

Publication

Ancient noeggerathialean reveals the seed plant sister group diversified alongside the primary seed plant radiation [2021/3]

Journal

Proceedings of the National Academy of Sciences of the United States of America

Volume

118

Issue

11(e2013442118)

Page number

2

Year

2021

Fossil Status

cones

Stratigraphy

Asselian

Strat. comment

Taiyuan Formation - 298.34 ± 0.09 Ma

Location

Wuda Coalfield, Wuhai, Inner Mongolia, China

Paleoregion

Cathaysia (Sino-Korea)

Data for Holotypus

Repository

Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China

Repository Number

PB22126

Num

Fig. 1A

Pub.

Ancient noeggerathialean reveals the seed plant sister group diversified alongside the primary seed plant radiation [2021/3]

Data for Paratypus

Repository

Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing, China

Repository Number

PB22127-22138

Diagnosis

Monopodial stem with once-pinnate compound leaves and pseudostrobili forming a crown. Stem eustele with pith; cauline primary xylem strand adaxially curved; secondary xylem pycnoxylic; leaf traces tangentially elongated. Rachis of leaf and pseudostrobilus with a reversed Ω-shaped vascular bundle with protoxylem at lateral margin. Pinnules with radiate venation, arranged in four rows, with two rows of large, lanceolate pinnules on lower surface, two rows of small, oblong pinnules on upper surface of the axis. Pseudostrobilus heterosporous; sporophylls whorled, proximally disk-shaped or dissected into segments, distally upturned and dissected. Sporangia attached adaxially and proximally to sporophyll in single ring. Megasporangia in vertical row bearing single functional megaspore. Microspores of the Calamospora type.