Christopher John Hollis¹, Erica M Crouch¹, Tammo Reichgelt², Elizabeth Kennedy¹, David R Greenwood³, Bernhard David Naafs⁴, Gordon Neil Inglis⁵, Richard Pancost⁴ and James Ian Raine¹, (1)GNS Science, Lower Hutt, New Zealand, (2)Lamont -Doherty Earth Observatory, Palisades, United States, (3)Brandon University, Dept. of Biology, Brandon, MB, Canada, (4)University of Bristol, Organic Geochemistry Unit, School of Chemistry, Bristol, United Kingdom, (5)University of Bristol, Organic Geochemistry Unit, School of Chemistry, Bristol, BS8, United Kingdom