Alexandra van der Geer is a palaeontologist, specialised in aspects of evolution and biogeography of extinct mammals on islands. She is also an indologist, specialised in the interface between human material culture and native faunas in South Asia. She has worked at the National and Kapodistrian University of Athens, Greece since 2004 and currently works at Naturalis Biodiversity Center, Leiden, the Netherlands. Through her research on island mammals she collaborates with geologists, biogeographers, anatomists and archaeologists in attempting to reconstruct the evolution, adaptation and extinction of insular endemics globally and to investigate the role of humans. She has excavated at sites in Greece and Italy, and is currently expanding her research focus to include extant insular mammals with emphasis on South East Asia and the Pacific. She has published over 50 papers and several books including Animals in Stone (2008) and Evolution of Island Mammals (2010).