Professorial Research Associate, University College London

Regius Professor of Geology, Edinburgh

Professor of Marine Science, University of South Florida

Professor of Micropalaeontology, MARUM, University of Bremen

University of Bremen & AWI

Retired, Dept. Environmental Health Sciences, School of Public Health, University at Albany …

Geomarine Research, and University of Auckland

Maître de conférence, Université de Bordeaux

Full Professor of Palaeontology, Universidad de Zaragoza, Spain

Professor, Dept. of Geological Eng., Middle East Technical University, Ankara-Turkey