Title: Late Devonian and Early Carboniferous acritarchs from Nyalam county, Xizang (Tibet), China
Abstract: There are complete sequences of Late Devonian and Early Carboniferous rocks in Nyalam, Xizang (Tibet), China, containing rich biotas. Twenty-two more samples of the Upper Devonian Zhangdon Formation and the Lower Carboniferous Yali and Naxin Formations yielded well-preserved spore and organic-walled microphytoplankton floras. Forty-eight species of acritarchs are recognized and distributed among 22 genera one of which, Yalisphaeridium, is new. The species Yalisphaeridium xizangensis, Y. baculatum and Lophosphaeridium mucronatum are described for the first time. As a result of the extensive studies of the acritarch assemblages from the Late Devonian and Early Carboniferous in Nyalam, Xizang (Tibet) it may be subdivided into three acritarch assemblage zones, one zone for the Late Devonian and two for the Early Carboniferous. Devonian and Carboniferous acritarchs undoubtedly have a role in stratigraphical subdivision and correlation, as well as reconstructions of palaeogeography, palaeoecology and palaeoclimates.
Publication Year: 1986
Publication Date: 1986-02-01
Language: en
Type: article
Indexed In: ['crossref']
Access and Citation
Cited By Count: 17
AI Researcher Chatbot
Get quick answers to your questions about the article from our AI researcher chatbot