1. Palaeoecosystems Group, Department of Earth Sciences, Durham University, Durham DH1 3LE, UK
2. Université de Lyon, Lyon 1, ENSL, CNRS, LGL-TPE, F-69622 Villeurbanne, France
3. Geological Survey of New South Wales, W.B. Clarke Geoscience Centre, 947-953 Londonderry Road, Londonderry 2753, New South Wales, Australia
4. CNRS-Université de Lille, UMR 8198 Evo-Eco-Paleo, F-59000, France