J Integr Plant Biol. ›› 1985, Vol. 27 ›› Issue (6): -.

• Research Articles •    

Microfossil assemblage from the Late of Middle Carboniferous in Western Shaan-Gan-Ning Basin, Northwest China

Geng Guo-cang   

Abstract: In this paper, some results of the study on the sporepollen of the Yanghugou Formation in the western Shaan-Gan-Ning (Ordos) Basin of Northwest China axe reported. Plenty of well preserved microfossil, which 136 types belong to 62 microspore genera and one megaspore genus, including 2 new genera , 13 new species, I Acritarch (Chamosphaera pseudozonatus gen. et sp. nov.), from 8 bore-holes and outcrop have been discribed. In generally, the microfiora of the Yanghugou Formation is similar to the Taiyuan Formation (Upper Carboniferous). According to the spore-pollen assemblage of Yanghugou Formation may correlate with those in the Middle Carboniferous of Great Britain, Belgium the north of France, German and North America. Besides, the assemblage are similar to Middle Carboniferous of Nortth Shandong and Hengshanbu of Ningxia in the microfossil assemblage. The geological age of the beds is considered to Late of Middle Carboniferous.

Key words: Northwest of Shaan-Gan-Ning (Ordos) Basin, Yanghugou Formation, Late of Middle Carboniferous

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