<i>Scolecopteris</i><i> oxydonta</i> sp. nov., a new marattialean fern from the early Permian Wuda Tuff Flora

doi:10.1016/j.revpalbo.2024.105231

NIGPAS OpenIR

	Scolecopteris oxydonta sp. nov., a new marattialean fern from the early Permian Wuda Tuff Flora
通讯作者	Zhou, Weiming([email protected]) ; Wang, Jun([email protected])
	Sun, Wenjun 1,2; Zhou, Weiming1,2 ; Wu, Yifei 1,2; Psenicka, Josef 3; Hilton, Jason 4,5; Wang, Jun1,2
	2025
发表期刊	REVIEW OF PALAEOBOTANY AND PALYNOLOGY
ISSN	0034-6667
卷号	332 页码:18
摘要	A marattialean fern with organically connected fertile and vegetative parts is described from the early Permian Wuda Tuff Flora in Inner Mongolia, China. The tripinnate fronds have typical pecopterid vegetative pinnules but do not match any known Pecopteris species. The fertile pinnules are distinctly different from the vegetative ones, with an extended margin that forms long lobes, bending abaxially to cover the synangia. Each fertile pinnule bears 7-10 ovate, pedicellate synangia arranged abaxially in a single row to either side of the midvein, with each synangium composed of 3-4 elongate sporangia. The sporangium wall is three-layered, with the outermost layer differentiated into four areas peripherally to provide differing mechanical strengths and facilitate dehiscence. In situ spores are trilete and 39-45 mu m in diameter. These combined characteristics place the studied fern in the Scolecopteris Minor group of the Psaroniaceae family. The new species, Scolecopteris oxydonta sp. nov., exhibits many evolutionarily advanced traits such as modified fertile pinnules, unvascularized pedicels, differentiated sporangium walls, and a specialized opening mechanism. However, S. oxydonta sp. nov. also retains evolutionarily primitive traits including relatively large spores. S. oxydonta sp. nov. represents the fourth Scolecopteris species recognized from the Wuda Tuff Flora, adding to the growing body of evidence on the morphology and diversity of marattialean plants from the Permian of Cathaysia. We also consider preservational differences among the specimens and suggest that the composition and morphology of fertile pinnules produced closed microenvironments during early diagenesis that facilitated localized anatomical preservation.
关键词	Dimorphism Psaroniaceae Pecopteris Cathaysia Flora Marattialean evolution Taphonomy
DOI	10.1016/j.revpalbo.2024.105231
收录类别	SCI
语种	英语
关键词[WOS]	VEGETATIONAL POMPEII ; INNER-MONGOLIA ; TRANSITION ; BASIN
资助项目	National Natural Science Foundation of China[42230210] ; National Natural Science Foundation of China[42172018] ; Youth Innovation Promotion Association of Chinese Academy of Sciences[2022312] ; Visiting Professorship for Senior International Scientists of Chinese Academy of Sciences[2016vea004]
WOS研究方向	Plant Sciences ; Paleontology
WOS类目	Plant Sciences ; Paleontology
WOS记录号	WOS:001349721200001
项目资助者	National Natural Science Foundation of China ; Youth Innovation Promotion Association of Chinese Academy of Sciences ; Visiting Professorship for Senior International Scientists of Chinese Academy of Sciences
出版者	ELSEVIER
文献类型	期刊论文
条目标识符	http://ir.nigpas.ac.cn/handle/332004/44507
专题	中国科学院南京地质古生物研究所
通讯作者	Zhou, Weiming; Wang, Jun
作者单位	1.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, Key Lab Palaeobiol & Petr Stratig, Nanjing 210008, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.West Bohemian Museum Pilsen, Ctr Palaeobiodivers, Plzen 30100, Czech Republic 4.Univ Birmingham, Birmingham Inst Forest Res, Birmingham B15 2TT, England 5.Univ Birmingham, Sch Geog Earth & Environm Sci, Birmingham B15 2TT, England
推荐引用方式 GB/T 7714	Sun, Wenjun,Zhou, Weiming,Wu, Yifei,et al. Scolecopteris oxydonta sp. nov., a new marattialean fern from the early Permian Wuda Tuff Flora[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2025,332:18.
APA	Sun, Wenjun,Zhou, Weiming,Wu, Yifei,Psenicka, Josef,Hilton, Jason,&Wang, Jun.(2025).Scolecopteris oxydonta sp. nov., a new marattialean fern from the early Permian Wuda Tuff Flora.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,332,18.
MLA	Sun, Wenjun,et al."Scolecopteris oxydonta sp. nov., a new marattialean fern from the early Permian Wuda Tuff Flora".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 332(2025):18.