MacroevolutionariesBruce S. Lieberman is Dean's Professor of Evolutionary Biology and senior curator of invertebrate paleontology at the University of Kansas, where he also directs the Paleontological Institute and is editor in chief of the Treatise on Invertebrate Paleontology. His research focuses on patterns and processes of evolution and extinction using the fossil record. Niles Eldredge is an invertebrate paleontologist, an evolutionary biologist, and an emeritus