Megan Rohrssen (a), Alice Charteris (a), Gordon N. Inglis (a), Danielle Grogan (b), Richard D. Pancost (a) & Jessica H. Whiteside (c)
(a) Organic Geochemistry Unit, School of Chemistry, The Cabot Institute, University of Bristol, Cantock's Close, Bristol BS8 1TS, UK. E-mail: megan.rohrssen@bristol.ac.uk
(b) Institute for the Study of Earth, Oceans, and Space, University of New Hampshire, USA.
(c) Ocean and Earth Science, National Oceanography Centre Southampton, University of Southampton, European Way, Southampton SO14 3ZH, UK.