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Abstract Detail


Deep Time Colloquium

Wang, Xin [1], Duan, Shuying [2], Geng, Baoyin [2], Cui, Jinzhong [2].

A possible Jurassic angiosperm from western Liaoning, China.

ANGIOSPERM origin has been a hot research topic for botanists. However, well-accepted angiosperm fossil record remains restricted to the Cretaceous up to now. Here Schmeissneria sinensis, a possible angiosperm, from the Haifanggou Formation (middle Jurassic) in western Liaoning, China brings fresh data to the research. S. sinensis has flowers clustered in pair along the inflorescence peduncle. Each flower is hypogynous and composed of a monochlamydeous perianth and an ovary. The closed bilocular ovary appears to eliminate Schmeissneria from Ginkgoales and suggests a possible relationship with angiosperms. The possible angiospermous affinity and the Jurassic age of Schmeissneria may push the origin of angiosperm back to the Triassic and constitute a challenge for the current angiosperm systematics.


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1 - Nanjing Institute of Geology and Palaeontology, State Key Laboratory of Palaeobiology and Stratigraphy, 39 Beijing Dong Road, Nanjing, Jiangsu, 210008, P R China
2 - Chinese Academy of Sciences, Institute of Botany, State Key Laboratory of Systematic and Evolutionary Botany, Haidian District, 20 Nanxincun, Xiangshan, Beijing, 100093, China

Keywords:
Fossil Angiosperm
origin
Jurassic
Liaoning
China
Schmeissneria.

Presentation Type: Symposium or Colloquium Presentation
Session: 44-5
Location: 206/Performing Arts Center
Date: Tuesday, August 1st, 2006
Time: 11:15 AM
Abstract ID:370


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