Lamont-Doherty Earth Observatory of Columbia University

University of Cambridge

Professor, Director: Centre for Planetary Habitability (PHAB) (ex CEED), University of Oslo

PALEOMAP Project

Professor emérito, Universidade de São Paulo (USP)- 1924-2012

Professor of Global Tectonics and Paleogeography, Utrecht University, the Netherlands

Professor of Geology and Geophysics, China University of Geosciences, Beijing

Senckenberg Dresden Museum of Zoology

professor of Geology, AGH University of Science and Technology

Leading Resaercher, D. Phil., Institute of Geology and Mineralogy SB RAS