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	2023, Vol. 25(2): 471-484    DOI: 10.7605/gdlxb.2023.02.029
	New records of Sphenopteris from the Cisuralian of Yongchang,Gansu Province,with a discussion on diversity and palaeogeographic evolution of this genus during the Late Paleozoic
	WANG Xuelian1, XIONG Conghui2, SUN Bainian2
	1 Key Laboratory of Desert and Desertification & Key Laboratory of Ecological Safety and Sustainable Development in Arid Lands, Northwest Institute of Eco-Environment and Resources,Chinese Academy of Sciences,Lanzhou 730000,China; 2 School of Earth Sciences & Key Laboratory of Mineral Resources in Western China(Gansu Province), Lanzhou University,Lanzhou 730000,China
	Received 2022-12-01  Revised 2023-01-24
	Supporting info
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