1. Laboratoire de Paléontologie et Biologie Evolutive; Université du Québec à Rimouski; Rimouski QC G5L 3A1 Canada
2. Laboratoire de Planétologie et Géodynamique, UMR CNRS 6112; Université de Nantes; Nantes 44000 France
3. Department of Earth Sciences; Natural History Museum; Cromwell Road London SW75BD UK
4. Department of Environment and Agriculture; Curtin University; Perth WA 6102 Australia
5. Faculty of Science and Engineering; Flinders University; 2100 Adelaide SA 5001 Australia
6. Research & Collections; Canadian Museum of Nature; Ottawa ON K1P 6P4 Canada