New data about three sphenophylls and their spores from the volcanic tuff of Wuda, Taiyuan Formation, earliest Permian, China

0546357 - GLÚ 2022 RIV NL eng J - Journal Article
Libertín, M. - Bek, Jiří - Wang, J. - Opluštil, S. - Pšenička, J. - Votočková Frojdová, Jana
New data about three sphenophylls and their spores from the volcanic tuff of Wuda, Taiyuan Formation, earliest Permian, China.
Review of Palaeobotany and Palynology. Roč. 294, November (2021), č. článku 104484. ISSN 0034-6667. E-ISSN 1879-0615
R&D Projects: GA ČR(CZ) GA19-06728S
Institutional support: RVO:67985831
Keywords : Sphenophyllum * In situ spores * Monolete spores * Lowermost * Permian * Wuda
OECD category: Paleontology
Impact factor: 2.493, year: 2021
Method of publishing: Limited access
https://www.sciencedirect.com/science/article/pii/S0034666721001081

A new species Sphenophyllum parvifolium sp. nov. is proposed for a whole plant based on organically connected leafy shoots and cones from the Wuda locality, Inner Mongolia, North China. The most characteristic feature is the sporangiophore with lanceolate expansions bearing sporangia. Cones were studied morphologically, including cuticles and in situ spores. Cones yielded monolete spores of the Laevigatosporites or Latosporites type. Other sphenophylls from this locality include Sphenophyllum cf. oblongifolium and Sphenophyllum cf. angustifolium, both with associated cones yielding in situ spores of the same type as Sphenophyllum parvifolium, and sterile specimens of Sphenophyllum kawasakii. Some foliated axes of this type bear cones, but without in situ spores. Hooklike structures at the ends of leaf lobes of these Sphenophyllum species could have enabled the plants to climb. All species are from a volcanic tuff bed, between coal seams Nos. 6. and 7 in the Wuda Coalfield. The age of the plantbearing tuff in the Taiyuan Formation is 298.34 ± 0.09 Ma (Asselian, earliest Permian).
Permanent Link: http://hdl.handle.net/11104/0323733