# David Jablonski

David Ira Jablonski (born 1953) is an American professor of geophysical sciences at the University of Chicago. His research focuses upon the ecology and biogeography of the origin of major novelties, the evolutionary role of mass extinctions—in particular the Cretaceous–Paleogene extinction event—and other large-scale processes in the history of life.Jablonksi is a proponent of the extended evolutionary synthesis. == Education == Jablonski was educated at Columbia University (earning his Bachelor of Arts degree in 1974) and completed his graduate work at Yale University (with his Master of Science degree in 1976 and Ph.D. in 1979).