Dinosaur Extinction : Changing Views

I David Archibald is Professor of Biology and Curator of Mammals at San Diego State University. He received his Ph.D. from the University of California, Berkeley in 1977. He has written numerous articles, essays, reviews, and monographs on the systematics and evolution of early mammals, biostratigraphy, faunal analysis, and extinction. His fieldwork has taken him from the American West to Middle Asia. His 1996 book Dinosaur Extinction and the End of an Era: What the Fossils Say (Columbia University Press) documents what we know of the fossil record at the time of dinosaur extinction. . . . it appears that marine regression, an asteroid impact, and massive volcanism each probably played a significant role in what is the best known mass extinction in Earth’s history.