A novel gymnosperm reproductive organ from the Jurassic of China

doi:10.1016/j.palwor.2023.03.002

NIGPAS OpenIR

	A novel gymnosperm reproductive organ from the Jurassic of China
通讯作者	Wang, Xin([email protected])
	Liu, Wen-Zhe 1; Shen, Hao-Xuan 2,3,4; Wang, Xin2,3
	2024-04-01
发表期刊	PALAEOWORLD
ISSN	1871-174X
卷号	33 期号:2 页码:411-419
摘要	A feature that distinguishes angiosperms from their gymnosperm peers is that the ovules of angiosperms are enclosed before pollination. Theoretically, the angiosperms were derived from fossil seed plants that have their ovules not enclosed before pollination (gymnosperms). The origin of angiosperms is essentially a process in which the former exposed ovules got enclosed. Although various fossil taxa with different extent of ovule-protection have been documented in the Mesozoic, the morphological gap between angiosperms and gymnosperms is still far from bridged. To narrow down such a gap, here we report a novel fossil gymnosperm, Paradoxa n. gen., demonstrating a mosaic feature comparable to angiosperms in certain aspects from the Jiulongshan Formation (Middle-Late Jurassic) of Inner Mongolia, China: pollen grains trapped inside the female unit imply that Paradoxa is a gymnosperm, while several characters (especially long apical process and partially covered ovule) make it more comparable to angiosperms. It is noteworthy that, different from Caytonia, Umkomasia and Petriellaea (all in the so-called seed ferns), Paradoxa's Bau-plan is more comparable to that of the basalmost angiosperm Amborella, suggesting a possible provenance of angiosperm carpels. (c) 2023 Elsevier B.V. and Nanjing Institute of Geology and Palaeontology, CAS. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
关键词	fossil reproductive organ Jurassic gymnosperm China
DOI	10.1016/j.palwor.2023.03.002
收录类别	SCI
语种	英语
关键词[WOS]	INNER-MONGOLIA ; DAOHUGOU ; INSECTA ; ANGIOSPERM ; SEED ; ORIGIN ; AGE ; MORPHOLOGY ; DIVERSITY ; PLANTS
资助项目	National Natural Science Foundation of China[42288201] ; National Natural Science Foundation of China[41688103] ; National Natural Science Foundation of China[91514302] ; Strategic Priority Research Program (B) of Chinese Academy of Sciences[XDB26000000]
WOS研究方向	Paleontology
WOS类目	Paleontology
WOS记录号	WOS:001234717600002
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program (B) 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/332004/43832
专题	中国科学院南京地质古生物研究所
通讯作者	Wang, Xin
作者单位	1.Northwest Univ, Sch Life Sci, Minist Educ, Key Lab Resource Biol & Biotechnol Western China, Xian 710069, Peoples R China 2.Chinese Acad Sci, Nanjing Inst Geol & Palaeontol, State Key Lab Palaeobiol & Stratig, Nanjing 210008, Peoples R China 3.Chinese Acad Sci, CAS Ctr Excellence Life & Paleoenvironment, Nanjing 210008, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
通讯作者单位	中国科学院南京地质古生物研究所
推荐引用方式 GB/T 7714	Liu, Wen-Zhe,Shen, Hao-Xuan,Wang, Xin. A novel gymnosperm reproductive organ from the Jurassic of China[J]. PALAEOWORLD,2024,33(2):411-419.
APA	Liu, Wen-Zhe,Shen, Hao-Xuan,&Wang, Xin.(2024).A novel gymnosperm reproductive organ from the Jurassic of China.PALAEOWORLD,33(2),411-419.
MLA	Liu, Wen-Zhe,et al."A novel gymnosperm reproductive organ from the Jurassic of China".PALAEOWORLD 33.2(2024):411-419.