Dear colleagues: IGCP-652 aims to build up a high-resolution and accurate Paleozoic time scale to study tectonic, climatic and biologic evolutions. In order to promote the study of Paleozoic Geologic Time Scale and attract more researchers in Paleozoic research, we are pleased to announce that the 2019 IGCP-652 Conference will be hosted in the Lanzhou University (LZU), China, from August 23, 2019 to August 27, 2019. Lies along the Yellow River, LZU has a long history of excellence in chemistry, ...