Another special volume of Quaternary International, edited by Martin J. Head, Philip L. Gibbard, and Thijs van Kolfschoten, and dealing with the formal subdivision of the Quaternary, is also now published. It is based on an SQS-SACCOM sponsored symposium “The Quaternary System and its formal subdivision” held during the STRATI 2013 conference in Lisbon. The 13 contributions are now available here.