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A new Drynaria (Polypodiaceae) from the Upper Pliocene of Southwest China
Su, Tao1,2; Jacques, Frederic M. B.3; Liu, Yu-Sheng (Christopher)4; Xiang, Jianying1; Xing, Yaowu1; Huang, Yongjiang1,2; Zhou, Zhekun1,5
AbstractA polypodiaceous fern, Drynaria callispora sp. nov., is described from the upper Pliocene Sanying Formation in western Yunnan Province, southwestern China. This species with well-preserved pinnae and in situ spores is the first convincing Drynaria fossil record. Detailed morphological investigation reveals that D. callispora is characterized by 1) pinnatifid fronds with entire-margined pinnae having straight or zigzag secondary veins; 2) finer venation showing void quadrangular areoles, but occasionally with one unbranched veinlet; 3) one row of circular son on each side of the strong primary vein; and 4) in situ spores with verrucate exospores elliptical in polar view and bean-shaped in equatorial view. A morphological comparison shows that D. callispora is significantly different from all the fossil species previously identified as drynarioids. A phylogenetic analysis of D. callispora supports that the fossil is closely related to D. sinica Diels and D. mollis Bedd., two extant species distributing in the Himalayas. The discovery of the new fern indicates that the genus Dynaria became diversified in its modern distribution region no later than the late Pliocene and had retained a similar ecology to that of many modern drynarioid ferns ever since. (C) 2010 Elsevier B.V. All rights reserved.
Keyworddrynarioid in situ spores Pliocene Polypodiaceae Sanying Formation Yunnan China
Funding ProjectNational Natural Science Foundation of China, NSFC[41030212 30970206] ; National Natural Science Foundation of China, NSFC[40950110338] ; National Basic Research Program of China, 973 Program[2007CB411601] ; CAS[2009YB1-13] ; U.S. National Science Foundation[EAR-0746105]
WOS Research AreaPlant Sciences ; Paleontology
WOS SubjectPlant Sciences ; Paleontology
WOS IDWOS:000288472200011
Funding OrganizationNational Natural Science Foundation of China, NSFC ; National Basic Research Program of China, 973 Program ; CAS ; U.S. National Science Foundation
Document Type期刊论文
Corresponding AuthorZhou, Zhekun
Affiliation1.Chinese Acad Sci, Key Lab Biodivers & Biogeog, Kunming Inst Bot, Kunming 650204, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Dept Palaeobot & Palynol, Nanjing Inst Geol & Paleontol, Nanjing 210008, Peoples R China
4.E Tennessee State Univ, Dept Biol Sci, Johnson City, TN 37614 USA
5.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Peoples R China
Recommended Citation
GB/T 7714
Su, Tao,Jacques, Frederic M. B.,Liu, Yu-Sheng ,et al. A new Drynaria (Polypodiaceae) from the Upper Pliocene of Southwest China[J]. REVIEW OF PALAEOBOTANY AND PALYNOLOGY,2011,164(1-2):132-142.
APA Su, Tao.,Jacques, Frederic M. B..,Liu, Yu-Sheng .,Xiang, Jianying.,Xing, Yaowu.,...&Zhou, Zhekun.(2011).A new Drynaria (Polypodiaceae) from the Upper Pliocene of Southwest China.REVIEW OF PALAEOBOTANY AND PALYNOLOGY,164(1-2),132-142.
MLA Su, Tao,et al."A new Drynaria (Polypodiaceae) from the Upper Pliocene of Southwest China".REVIEW OF PALAEOBOTANY AND PALYNOLOGY 164.1-2(2011):132-142.
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