State University of New York (SUNY) at Stony Brook (Stony Brook University) Professor Maureen O'Leary from the Department of Anatomical Sciences in Stony Brook University's Renaissance School of Medicine (RSOM) and research associate at the American Museum of Natural History (AMNH) is part of a research team that recently uncovered a preserved fossil from Mongolia's Gobi Desert that is reshaping scientists' understanding of mammal evolution during the age of dinosaurs.