A New Fossil of Cystodium (Cystodiaceae) from the mid-Cretaceous Myanmar amber

被引：0
|
作者：
Li, Chunxiang [1 ,2 ]
Moran, Robbin C. [3 ]
Wang, Yiran [2 ,4 ]
Li, Ya [2 ]
Ma, Junye [1 ]
机构：
[1] Chinese Acad Sci NIGPAS, Nanjing Inst Geol & Palaeontol, Key Lab Palaeobiol & Petr Stratig, Nanjing 210008, Peoples R China
[2] NIGPAS, Dept Cenozo Biol Evolut & Environm, Nanjing 210008, Peoples R China
[3] New York Bot Garden, Bronx, NY 10458 USA
[4] China Univ Min & Technol, Sch Resources & Earth Sci, Xuzhou 221116, Peoples R China
来源：
CRETACEOUS RESEARCH | 2024年 / 160卷
关键词：
Fern; Fossil fern; Polypodiales; TREE FERNS; PHYLOGENY;
D O I：
10.1016/j.cretres.2024.105882
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
The only known fossil of Cystodium (Cystodiaceae) is C. sorbifolioides from mid-Cretaceous Myanmar amber. Here we describe a new fossil species of Cystodium , C. parasorbifolium, also from amber collected in Myanmar. This new species belongs to Cystodium based on pinnate fertile lamina segments, terminal sori protected by a reflexed lobe of the lamina (outer or false indusium), free veins, vertical annuli interrupted at the stalk, trilete spores, and striate perines. It differs from C. sorbifolioides by reflexed ovate-conical indusia and spores with clear striate perines. This new fossil species suggests that Cystodium was more diverse in the forests of Myanmar during the Cretaceous. (c) 2024 Elsevier Ltd. All rights reserved.
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页数：6
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