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| details | Middle Jurassic | China(Kansu) | Du,B.-A. et al. Sporo-pollen assemblages from Yanan and Zhiluo Formations in Chongxin County, Gansu Province. | 1982 | |
| details | Middle Jurassic | China(Kansu) | Du,B.-A. Sporo-pollen assemblages from the Middle Jurassic in the Wangjiashan Basin of Jingyuan, Gansu, and their stratigraphic and paleogeographic significance. | 1985 |