Christopher J ClealChristopher J. Cleal is Head of Botany at National Museum Wales. He is a Fellow of the Geological Society, London, and the Linnean Society, London, and is a member of the Fossil Plant Committee of the International Association of Plant Taxonomy (IAPT. He has published nine books and over 200 papers in academic journals, dealing with palaeobotany, stratigraphy and geoconservation. Read More Read Less