Mark A. Norell is Division Chair and Macaulay Curator, Curator-in-Charge of Fossil Amphibians, Reptiles, and Birds, Division of Paleontology at the American Museum of Natural History in New York. One of the most respected living paleontologists, Norell is a professor at Richard Gilder Graduate School, has held faculty appointments in the Department of Biology at Yale University, and has taught at Columbia University and the City University of New York.