The present review of published data as well as the new results demonstrate the versatility of conodonts in documenting and explaining global environmental fluctuations related to the Kačák Episode (KE) in the latest Eifelian. Although the conodont zonation of the KE interval is ambiguous and requires revision, the compilation of conodont stratigraphic ranges shows their potential for a precise worldwide correlation of relevant marine strata. Conodont biofacies may serve to document environmental changes connected with KE, in particular the sealevel rise at its beginning, followed by a regressive trend. Nevertheless, the familiar Icriodus/Polygnathus ratio should be carefully applied as an indication of water depth and nearshore vs. offshore position, being controlled also by other factors, such as paleolatitude and/or climate. Oxygen isotopes in conodont apatite, studied using secondary ion mass spectrometry technique evidence a warming at the onset of KE, based on the new data from the open marine facies of the Prague Basin. At the same time, they indicated climate-controlled salinity fluctuations in the epeiric Belarusian Basin. The present investigations as well as previous results suggest caution when analyzing thermally altered conodonts which may result in biased oxygen isotope signatures. The present experience suggests the conodont colour alteration index CAI 3 as a boundary value above which the caution is necessary.

目前对已发表数据的回顾以及新结果证明了牙形刺在记录和解释与最新 Eifelian 中的 Kačák Episode (KE) 相关的全球环境波动方面的多功能性。尽管 KE 区间的牙形刺分带不明确且需要修订，但牙形刺地层范围的编制显示了其在全球范围内相关海洋地层的精确关联的潜力。牙形刺生物相可用于记录与 KE 有关的环境变化，特别是开始时的海平面上升，随后出现回归趋势。然而，熟悉的Icriodus/Polygnathus比率应谨慎应用于水深和近岸与近海位置的指示，同时也受到其他因素的控制，例如古纬度和/或气候。根据来自布拉格盆地开放海相的新数据，使用二次离子质谱技术研究的牙形刺磷灰石中的氧同位素证明了KE开始时的变暖。同时，它们表明了白俄罗斯盆地气候控制的盐度波动。目前的调查以及之前的结果表明，在分析热改变的牙形刺时要小心，这可能会导致氧同位素特征出现偏差。目前的经验表明牙形刺颜色变化指数 CAI 3 作为一个边界值，高于该值则需要谨慎。