.i.Qasimia yunnanica./i. sp. nov., a marattialean fern with bivalvate synangia from the Lopingian of Southwest China

GUO, Y., ZHOU, Y., BEK, Jiří, YANG, S.-L., FENG, Z. Qasimia yunnanica sp. nov., a marattialean fern with bivalvate synangia from the Lopingian of Southwest China. Review of Palaeobotany and Palynology. 2021, 293(October 2021), 104497. ISSN 0034-6667. E-ISSN 1879-0615. Available: doi: 10.1016/j.revpalbo.2021.104497.