Ann Holbourn (Co-Chief Scientist, Christian-Albrechts-Universität zu Kiel, Germany) and Tom Dunkley Jones (Paleontologist, University of Birmingham, United Kingdom) discuss the biostratigraphy of Hole U1482A, which is based on the evolution and extinction of calcareous nannofossil and planktonic foraminifer species. (Credit: Bill Crawford, IODP JRSO) [Photo ID: exp363_057]