Many sections are known from Iran which exhibit sediments across the Devonian-Carboniferous (D-C) boundary. In contrast to the majority of published D-C sections worldwide from pelagic/hemipelagic environments, successions in Iran are mainly composed of shallow-water sediments. Correlation with hemipelagic or pelagic palaeoenvironments remains difficult due to biostratigraphic uncertainties in most sections and/or hiatuses. On the other hand, a limited number of sections dealing with shallow-water facies settings in Iran at this particular time period are known and further research is necessary. Several sections in the Alborz Mountains provide an excellent opportunity to study successions across the D-C boundary in shallow-water facies. In Iran, protognathoids are represented by Protognathodus meischneri and Protognathodus collinsoni. The two biostratigraphically important protognathoids (Protognathodus kuehni and Protognathodus kockeli) were not reported or did not occur for the first time in the Late Tournaisian. Early siphonodellids were described instead. In the frame of an Iranian/German research project, we study different palaeoenvironments to reduce serious palaeoenvironmental and palaeogeographical sampling bias which may limit our knowledge on the Hangenberg Event particularly in shallow-water facies. We present a summary on published D-C sections in Iran (Ghale-Kalaghu, Howz-e-Dorah 1, Howz-e-Dorah 2 and Shahmirzad) and sections which are under study (Mighan, Chelcheli and Khoshyeilagh) at the time of this writing.

从伊朗可知，有许多剖面显示出泥盆纪-石炭纪（DC）边界的沉积物。与世界上大多数来自中上层/半中层环境的DC区域相比，伊朗的演替主要由浅水沉积物组成。由于大多数断层和/或裂隙中生物地层的不确定性，与半海或上海古环境的相关性仍然很困难。另一方面，在此特定时期内处理伊朗浅水相环境的部分数量是已知的，因此有必要进行进一步的研究。阿尔伯兹山脉中的几个部分为研究浅水相直流边界上的演替提供了极好的机会。在伊朗，原种类固醇以Protognathodus meischneri和原生动物Collinsoni。两种生物地层学上重要的原刺柏类动物（Protognathodus kuehni和Protognathodus kockeli）在上图尔纳西晚期没有被报道或第一次出现。相反，描述了早期的虹吸虫。在伊朗/德国研究项目的框架内，我们研究了不同的古环境以减少严重的古环境和古地理采样偏差，这可能会限制我们对Hangenberg事件的了解，尤其是在浅水相中。我们在撰写本文时，介绍了伊朗已出版的DC部分（Ghale-Kalaghu，Howz-e-Dorah 1，Howz-e-Dorah 2和Shahmirzad）以及正在研究的部分（Mighan，Chelcheli和Khoshyeilagh）的摘要。 。