Szea yunnanensis sp. nov., a new leptosporangiate fern from the Lopingian of Southwest China
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67985831%3A_____%2F24%3A00578245" target="_blank" >RIV/67985831:_____/24:00578245 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0034666723001914" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0034666723001914</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.revpalbo.2023.105022" target="_blank" >10.1016/j.revpalbo.2023.105022</a>
Alternative languages
Result language
angličtina
Original language name
Szea yunnanensis sp. nov., a new leptosporangiate fern from the Lopingian of Southwest China
Original language description
A new species of adpressed leptosporangiate fern, Szea yunnanensis sp. nov., is described from the Xuanwei Formation (upper Permian) of Yunnan Province, Southwest China. Fronds of this new species are at least bipinnate, with suboppositely to alternately arranged cladophleboid pinnules. Fertile pinnules are triangular to falcate shaped and show slightly decurrent entire bases, acute apices, and proximally lobed margins. Sporangia are grouped into abaxial sori arranged in one row on each side of the midvein from the basal to the 1/2–2/3 portion of the pinnule. The number of sori per row varies from one to four. Sori are exindusiate, ovoid/ellipsoid, with a diameter of 1.3 mm on average, and each consists of approximately 25 sporangia. Sporangia with biseriate annuli are ovoid or ellipsoid, approximately 330 μm long and 230 μm wide, and each produces approximately 100 or more spores. Sporangial walls have one layer of polygonal/elongated cells. Trilete auriculate in situ spores of the Triquitrites-type have verrucate-rugulate-reticulate sculpture. The exine is 2–3 μm thick and without identifiable layers. The family relationship of Szea may belong to the Gleicheniaceae or Sermayaceae, but the combination of sporangium and spore characteristics of Szea inclines us to place this genus among Incertae Sedis. The family relationships of Chansitheca, Henanotheca, and Oligocarpia which were originally affiliated with the Gleicheniaceae are also questionable.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10506 - Paleontology
Result continuities
Project
<a href="/en/project/GA19-06728S" target="_blank" >GA19-06728S: How precisely can we reconstruct Carboniferous tropical forests? Examples from the Czech Republic and China</a><br>
Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Review of Palaeobotany and Palynology
ISSN
0034-6667
e-ISSN
1879-0615
Volume of the periodical
320
Issue of the periodical within the volume
January
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
13
Pages from-to
105022
UT code for WoS article
001119157400001
EID of the result in the Scopus database
2-s2.0-85177195592