首页|A New Angiosperm Genus from the Lower Cretaceous Yixian Formation, Western Liaoning, China
A New Angiosperm Genus from the Lower Cretaceous Yixian Formation, Western Liaoning, China
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国家科技期刊平台
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The abundant fossils of early angiosperms found in the Yixian Formation (125 Ma,Early Cretaceous) have demonstrated unexpectedly high diversity and various reproductive strategies,and thus have shed new light on early angiosperm evolution.Here,using light microscope and scanning electron microscope,we document several fructifications of Baicarpus gen.nov.from Liaoning province,China.Each fructification of the new taxon includes several apocarpous carpels/fruits attached in an urn-formed gynobase.Each fruit/carpel has a persistent straight style and an ovary enclosing a single seed.These fossil plants demonstrate a new floral organization and thus enhance our understanding of the diversity of angiosperms in the Yixian Formation.Together with previously reported ones,this fossil angiosperm suggests an origin time for angiosperms earlier than widely accepted.
paleobotanyfruitsBarremian-AptianYixian FormationLiaoning province
HAN Gang、FU Xiao-ping、LIU Zhong-jian、WANG Xin
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Palaeontological Center, Bohai University, Jinzhou 121013, China
Fairylake Botanical Garden, Shenzhen Municipality and Chinese Academy of Sciences, Shenzhen 518004, China
Shenzhen Key Laboratory for Orchid Conservation and Utilization, the National Orchid Conservation Center of China and Orchid Conservation & Research Center of Shenzhen, Shenzhen 518114, China
State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology,Nanjing 210008, China
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This research is supported by the National Basic Research Program of ChinaKnowledge Innovation Program of the Chinese Academy of Sciences
国家科技期刊平台
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