1. Department of Earth and Environmental Sciences, CEPSAR, The Open University, Walton Hall, Milton Keynes MK7 6AA, UK.
2. Department of Geology and Petroleum Geology, University of Aberdeen, Meston Building, King’s College, Aberdeen AB24 3UE, UK.
3. Tropical Biology Group, Royal Botanic Garden Edinburgh, 20a Inverleith Row, Edinburgh EH3 5LR, UK.
4. Instituto Geofísico, Escuela Politécnica Nacional, Ladrón de Guevara E11-253, Apartado 2759, Quito, Ecuador.