On Mon, 17 Aug 1998, Betty Cunningham wrote: > where are we getting the figures for 100% survival of mammals in > Montana? Archibald, J.D. 1996 Dinosaur extinction and the end of an era: what the fossils say. Columbia U. Press pp. 126, a graph showing 100% survival of eutherians (placentals) over the K/T boundary in Eastern Montana.