| 11 | Permian palynofioras from Yongchang and Sunan of Gansu Province and their phytoprovincial characteristics显示文摘The Early Permian (Shansi + Lower Shihhotse Formations) palynofloras of Longshoushan are dominated by Cathaysian-Euramerican common forms, mainly composed of pteridophytic and pteridospermous spores. But up to the Lower Shihhotse Formation, gymnosperms greatly developed, and they possibly already dominated the vegetation in the Upper Shihhotse Formation; while in the late Late Permian, they indicate a strong colour of Subangara area. In other words, during the whole Permian, the Cathaysian flora had a history from prosperity to decline, and Subangara plants might have had a reverse tendency there. | Shu, OY Zhu, HC Wang, H | 1999 | Chinese Science Bulletin1999，44，9： | 1 |
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