The 4th International Conodont Symposium (4th ICOS) in conjunction with the International Subcomissions on Stratigraphy of Devonian (SDS) and Silurian (ISSS) was held in Valencia (Spain) from 25-30 June 2017. During the meeting, Prof. WANG Chengyuan of NIGPAS was awarded the Pander Medal by the Pander Society, in recognition for his extremely active and high-quality contributions to conodonts and their applications to geologic history and stratigraphy.