Jan Zalasiewicz is Emeritus Professor of Palaeobiology at the University of Leicester. He was formerly a field geologist and palaeontologist with the British Geological Survey, involved in the geological mapping of eastern England and central Wales. His interests include Early Palaeozoic fossils, notably the graptolites (a kind of extinct zooplankton), mud and mudrocks, the Quaternary Ice Ages, the nature of geological time, and the geology made by humans. In recent years he has helped develop the concept of an Anthropocene epoch. He has written many popular science articles and books.
