A team of scientists, including Department of Earth Sciences researcher Megan Mueller, have a new explanation for how mammals originally from Asia were able to colonize Europe around 34 million years ago. In a new Earth Science Reviews article, the team documents several lines of evidence for an ancient continent, named Balkanatolia, between Europe, Africa, and Asia. A combination of tectonic and climatic changes between 40 and 34 million years ago allowed for the dispersal of mammal from Asia to Balkanatolia to Europe.