We recompiled available Ordovician conodont data from previous studies for the Taebaek Group of the Taebaeksan Basin, Korea, based on the recently revised Ordovician conodont biostratigraphic scheme for North China. The recompiled Ordovician Taebaek Group conodont data conform well with the middle Tremadocian, lower Floian, and middle Darriwilian biozones of North China. The overall conodont distribution patterns, the occurrence of endemic species found only in North China, and the presence of an Upper Ordovician hiatus reaffirms the close relationship of the Taebaeksan Basin to the North China (Sino-Korean) Block. In addition, the absence of middle Floian to lower Darriwilian conodonts in the Taebaek Group and sudden appearance of abundant middle Darriwilian conodonts raises the possibility of the presence of a hiatus in the Lower Ordovician of the Taebaek Group. The possible disconformity may be located at the uppermost contact of the massive dolostone interval (the basal member) of the Makgol Formation. Lithologic evidence for the discontinuity includes the presence of local brecciation and oversized vuggy pores immediately below the contact and that of numerous dolomitic clasts above the contact.

基于最近修订的华北地区奥陶系牙形体生物地层学方案，我们重新编译了韩国太白山盆地太白组先前研究的奥陶系牙形体数据。重新编译的奥陶纪太白集团牙形体数据与华北中部特里克多克，下弗洛伊恩州和达里维利中部生物带非常吻合。牙形石的总体分布格局，仅在华北地区发现的特有种的出现以及上奥陶纪裂隙的存在，再次证明了太白山盆地与华北（中韩）地块的密切关系。此外，太白集团缺少中弗洛伊恩阶至下达里维利牙形齿，而突然出现的丰富的达里维里亚中齿形牙齿，则使太白集团下奥陶纪出现了裂隙。可能的不整合性可能位于马克戈尔组大型白云岩层段（基底部分）的最高接触处。断层的岩性证据包括在接触下方立即存在局部白垩纪和超大的孔隙，以及在接触上方存在大量白云质碎屑。