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DOI: 10.1371/journal.pone.0129526
论文题名:
Alectorioid Morphologies in Paleogene Lichens: New Evidence and Re-Evaluation of the Fossil Alectoria succini Mägdefrau
作者: Ulla Kaasalainen; Jochen Heinrichs; Michael Krings; Leena Myllys; Heinrich Grabenhorst; Jouko Rikkinen; Alexander R. Schmidt
刊名: PLOS ONE
ISSN: 1932-6203
出版年: 2015
发表日期: 2015-6-8
卷: 10, 期:6
语种: 英语
英文关键词: Lichenology ; Fossils ; Paleobiology ; Plant fossils ; Fungal structure ; Crystal structure ; Paleogene period ; Marine fossils
英文摘要: One of the most important issues in molecular dating studies concerns the incorporation of reliable fossil taxa into the phylogenies reconstructed from DNA sequence variation in extant taxa. Lichens are symbiotic associations between fungi and algae and/or cyanobacteria. Several lichen fossils have been used as minimum age constraints in recent studies concerning the diversification of the Ascomycota. Recent evolutionary studies of Lecanoromycetes, an almost exclusively lichen-forming class in the Ascomycota, have utilized the Eocene amber inclusion Alectoria succinic as a minimum age constraint. However, a re-investigation of the type material revealed that this inclusion in fact represents poorly preserved plant remains, most probably of a root. Consequently, this fossil cannot be used as evidence of the presence of the genus Alectoria (Parmeliaceae, Lecanorales) or any other lichens in the Paleogene. However, newly discovered inclusions from Paleogene Baltic and Bitterfeld amber verify that alectorioid morphologies in lichens were in existence by the Paleogene. The new fossils represent either a lineage within the alectorioid group or belong to the genus Oropogon.
URL: http://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0129526&type=printable
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/20372
Appears in Collections:过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响

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作者单位: Department of Geobiology, University of Göttingen, Göttingen, Germany;Department of Biology and Geobio-Center, University of Munich (LMU), Munich, Germany;Department of Earth and Environmental Sciences, University of Munich (LMU), and Bavarian State Collection for Palaeontology and Geology, Munich, Germany;Finnish Museum of Natural History, University of Helsinki, Helsinki, Finland;c/o Amber Study Group, Geological-Palaeontological Institute and Museum, University of Hamburg, Hamburg, Germany;Department of Biosciences, University of Helsinki, Helsinki, Finland;Department of Geobiology, University of Göttingen, Göttingen, Germany

Recommended Citation:
Ulla Kaasalainen,Jochen Heinrichs,Michael Krings,et al. Alectorioid Morphologies in Paleogene Lichens: New Evidence and Re-Evaluation of the Fossil Alectoria succini Mägdefrau[J]. PLOS ONE,2015-01-01,10(6)
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