摘要
The Ordovician(485.4 Ma-443.8Ma)is the longest period of the Paleozoic,which was characterized by a peak of greenhouse climate in Earth history,as well as extreme high sea level(Haq and Schutter,2008;Munnecke et al.,2010),with warm and humid conditions in early-middle period and seawater temperature up to 45℃(Trotter et al.,2008).
基金
supported by the Fundamental Research Funds for the Central Universities(Grant No.lzujbky-2017-k27)
contributed to IGCP 652.
