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Author - title
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Year
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| details | Aptian | Cenomanian | China(Heilungkiang) | Wu,H. Sporo-pollen assemblages of Dongshan and Houshigou Formations in Jixi Basin of Heilongjiang Province | 1992 |
| details | Aptian | Turonian | China(Peking Shih) | Xiao,Z. et al. The Mesozoic stratigraphy and biota of the Beijing area | 1993 |