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宁夏中卫县校育川地区石炭纪纳缪尔期地层(中卫组和靖远组)属海陆交互相沉积, 富含菊石、牙形石和植物等化石,地层出露完好,是研究纳缪尔期地层的良好地区。杨逢清、郑昭昌和刘志才等(1983)曾建立了该区系统的菊石带。经系统采集,笔者详细研究了校育川剖面的纳缪尔期牙形石,分出与各菊石带相对应的五个牙形石带。各牙形石带可
The Carboniferous Nimuar phase strata (Zhongwei Formation and Jingyuan Formation) in the Zhongyu area of Zhongwei County, Ningxia belong to the sedimentary facies of the sea-land facies, and are rich in fossils such as ammonites, conodonts and plants. The formations are intact, Stratum of good area. Yang Fengqing, Zheng Zhaochang and Liu Zhicai et al. (1983) established a series of ammonitic belts in this area. After systematic collection, the author studied in detail the Navel Periodontics in the Yushuchuan section and separated five conodont zones corresponding to the respective ammonite zones. The conodont belt can be