Department of earth, Atmospheric and Planetary Sciences, Massachusetts Institute of Technology 77 Massachusetts Avenue, Room E34-254, Cambridge, MA 02139 United States
Lamont-Doherty earth Observatory of Columbia University, Geochemistry Building P.O. Box 1000, Palisades, NY 10964 United States
School of Earth, Ocean and Planetary Sciences, Cardiff University Park Place, Cardiff, CF10 3YE United Kingdom
Department d'Estratigafia, Paleontologia i Geosciencies Marines, Universitat de Barcelona Campus de Pedralbes, Barcelona, 08028 Spain