Darin Croft is a Professor in the Department of Anatomy at Case Western Reserve University in Cleveland, Ohio, USA; he has secondary appointments in the departments of Biology and Earth, Environmental, and Planetary Sciences. He is a research associate at several US museums, including the Field Museum in Chicago and the American Museum of Natural History in New York, and currently serves as Editor-in-chief of the Journal of Mammalian Evolution. Dr. Croft’s research centers on the evolution of mammals in South America, including rodents, armadillos, sloths, marsupials, and several groups of extinct herbivores known as South American native ungulates (SANUs). His studies integrate a variety of approaches and span alpha taxonomy, phylogenetics, paleobiology, paleoecology, and reconstructing ancient terrestrial ecosystems. He has led or participated in dozens of field expeditions to Eocene, Oligocene, and Miocene sites throughout South America, many of these to Chile and Bolivia. His 2016 book, Horned Armadillos and Rafting Monkeys: The Fascinating Fossil Mammals of South America, strives to convey to the general public his passion for finding and studying the remains of mammals that once inhabited this island continent.