This conference has been postponed from July 2020. The scientific programme will be devoted to the latest developments in studies of living and fossil dinoflagellates. Dinoflagellates are one of the most important groups of planktonic and benthic marine microalgae and, as such, are of interest to both biologists and geologists. In keeping with the tradition of this conference series, the programme of the meeting (held only every three to five years) will consist of oral presentations and posters, supplemented by a small number of invited and keynote talks.