| 新疆莎车地区晚白垩世横裂甲藻和疑源类 |
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| UPPER CRETACEOUS DINOFLAGELLATE CYSTS AND ACRITACHS OF WESTERN XINJIANG |
| In this paper ninty-three species of Dinoflagellate cysts and six species ofAcritarchs are reported for the Yingjisha Group (Upper Cretaceous) of We-stern Xinjiang. One new genus (Hashenia gen. nov.), fourteen new species and one vari-ety of Dinoflagellate cysts are described. Three cysts assemblages zones may be differentiated from the YingjishaGroup as follow: 1. Cyclonephellum vannophorum-Canniagia colliveri assemblage zone ofCenomanian-Early Turonian in age. 2.Palaeohystrichophora infusorioides-Spiniferites ramosus var. ramosus assemblage zone of Turonian-Santonian in age. 3.Deflandrea microgranulate-Operculodinium baculatum assemblage zone of Campanian-Early Masstrichtian in age. The first and second assemblage zones indicate open marine sediments, where as the third assemblage zone reflects a neritic or lagoon facies. The Plankton assemblages of the Yingjisha Group are dominated by Chorte cysts, while the member of Deflandrea group are relatively rare, thus indicating rather warm water for their deposition and belonging to Tethyan province in biogeography. |
| XU Jing-xian,ZHANG Wang-ping.1980.UPPER CRETACEOUS DINOFLAGELLATE CYSTS AND ACRITACHS OF WESTERN XINJIANG[J].Acta Geoscientica Sinica,2(1):93-119. |
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