A perfect flower from the Jurassic of China

  title={A perfect flower from the Jurassic of China},
  author={Zhongjian Liu and Xin Wang},
  journal={Historical Biology},
  pages={707 - 719}
Flower, enclosed ovule and tetrasporangiate anther are three major characters distinguishing angiosperms from other seed plants. Morphologically, typical flowers are characterised by an organisation with gynoecium and androecium surrounded by corolla and calyx. Theoretically, flowers are derived from their counterparts in ancient ancestral gymnosperms. However, as for when, how and from which groups, there is no consensus among botanists yet. Although angiosperm-like pollen and angiosperms have… 

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