1. Research Foundation-Flanders, Research Unit Palaeontology, Department of Geology and Soil Sciences; Ghent University; Ghent Belgium
2. Department of Geology; University of Leicester; Leicester UK
3. Palaeozoic Environments Group, Department of Earth Sciences; Durham University; Durham UK
4. British Geological Survey; Keyworth UK
5. Protistology and Aquatic Ecology, Department of Biology; Ghent University; Ghent Belgium