title: A new find of the fossil Cyclosorus from the Eocene of South China and its paleoclimatic implication.
abstract: The thelypteroid ferns are widely distributed across tropical regions around the world, but information about their fossil representatives is scarce. A new species, Cyclosorus scutum Naugolnykh, Wang, Han et Jin was discovered from the Eocene Changchang Formation of Hainan Island, South China, and is described on the basis of sterile and fertile leaves, sori, sporangia and spores preserved in situ. Discovery of this new species clearly shows that climatic conditions of that time in this area were humid, i.e. warm and wet.
authors.affiliation: State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.|Geological Institute of Russian Academy of Sciences, Pyzhevsky per. 7, Moscow, Russia, 119017.|Kazan Federal University, Tatarstan, Russia.
authors.forename: Serge V
authors.initials: SV
authors.lastname: Naugolnykh
authors.affiliation: State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.
authors.forename: Li
authors.initials: L
authors.lastname: Wang
authors.affiliation: State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China.
authors.forename: Meng
authors.initials: M
authors.lastname: Han
authors.affiliation: State Key Laboratory of Biocontrol and Guangdong Provincial Key Laboratory of Plant Resources, School of Life Sciences, Sun Yat-sen University, Guangzhou, 510275, China. lssjjh@mail.sysu.edu.cn.
authors.forename: Jian-Hua
authors.initials: JH
authors.lastname: Jin
mesh_terms: D002681:China; D002980:Climate; D057231:Climate Change; D029624:Ferns / Q000033:anatomy & histology* / Q000145:classification / Q000502:physiology*; D005580:Fossils / Q000033:anatomy & histology*; D063148:Plant Dispersal
keywords: Cyclosorus; Eocene; Ferns; Paleoclimate; South China; Thelypteridaceae