Dale A. Russell is professor emeritus in the Department of Marine Earth and Atmospheric Sciences at North Carolina State University, and was among the first paleontologists to consider an extraterrestrial cause for the extinction of the giant dinosaurs. Jacques A. Gauthier is professor of geology and geophysics at Yale University and curator-in-charge of vertebrate paleontology and curator of vertebrate zoology, Yale Peabody Museum of Natural History.

Dale A. Russell is professor emeritus in the Department of Marine Earth and Atmospheric Sciences at North Carolina State University, and was among the first paleontologists to consider an extraterrestrial cause for the extinction of the giant dinosaurs. Jacques A. Gauthier is professor of geology and geophysics at Yale University and curator-in-charge of vertebrate paleontology and curator of vertebrate zoology, Yale Peabody Museum of Natural History.

Dale A. Russell is professor emeritus in the Department of Marine Earth and Atmospheric Sciences at North Carolina State University, and was among the first paleontologists to consider an extraterrestrial cause for the extinction of the giant dinosaurs. Jacques A. Gauthier is professor of geology and geophysics at Yale University and curator-in-charge of vertebrate paleontology and curator of vertebrate zoology, Yale Peabody Museum of Natural History.