A Novel Angiosperm from the Early Cretaceous and Its Implications for Carpel-Deriving

A Novel Angiosperm from the Early Cretaceous and Its Implications for Carpel-Deriving
Author:
  • LIU Zhongjian

    LIU Zhongjian

    1 Key Laboratory of National Forestry and Grassland Administration for Orchid Conservation and Utilization at College of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou 350002, China 2 Shenzhen Key Laboratory for Orchid Conservation and Utilization, National Orchid Conservation Center of China and Orchid Conservation and Research Center of Shenzhen, Shenzhen 518114, China
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  • WANG Xin

    WANG Xin

    3 CAS Key?Laboratory of Economic Stratigraphy and Palaeogeography, Nanjing Institute of Geology and Palaeontology and Center for Excellence in Life and Paleoenvironment, Chinese Academy of Sciences, Nanjing 210008, China
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Fund Project:

We appreciate Mr. Yan Fang and Ms. Chunzhao Wang for help with SEM, Ms. Lijun Chen for the drawing. This research is supported by the Strategic Priority Research Program (B) of Chinese Academy of Sciences (XDB26000000) and National Natural Science Foundation of China (91514302, 91114201) awarded to X.W.; and State Forestry Administration of China (No. 2005–122), Science and Technology Project of Guangdong (No. 2011B060400011), and Special Funds for Environmental Projects of Shenzhen (No. 2013-02) awarded to Z. J. L.. We cordially thank two anonymous reviewers for spending their valuable time helping us to improve this manuscript.

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    Abstract:

    The Yixian Formation (Lower Cretaceous) of China is famous for its fossils of early angiosperms, and these fossils have shed otherwise unavailable light on the evolution of angiosperms. The seeds in Archaefructus and Nothodichocarpum are inserted along the dorsal of the fruits while those in Sinocarpus are along the ventral of the fruits, suggesting different Bau-plans and pathways deriving the carpels in these plants of the Early Cretaceous. Adding further fossil evidence, here we report a novel fossil angiosperm, Neofructus lingyuanensis gen. et sp. nov, with its seeds inserted on both ventral and dorsal sides of the fruits documented through light microscopic and SEM observations, suggesting a novel way forming gynoecium in the Yixian Formation. These fossil angiosperms indicate that angiosperm gynoecia in the Yixian Formation (the Barremian to Aptian) are derived in obviously different ways, implying an evolutionary scenario for angiosperms quite different from formerly assumed.

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LIU Zhongjian, WANG Xin.2018. A Novel Angiosperm from the Early Cretaceous and Its Implications for Carpel-Deriving[J]. ACTA GEOLOGICA SINICA(English edition),92(4):1293~1298

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  • 收稿日期:2018-02-02
  • 最后修改日期:2018-04-12
  • 在线发布日期: 2018-08-21
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