Simpson, George Gaylord, 1902-2005-10-062005-10-061951http://hdl.handle.net/2246/238119 p. : ill. ; 24 cm.Includes bibliographical references (p. 18-19)1800726 bytesapplication/pdfen-USQL1 .A436 no.1541, 1951Insectivora, Fossil -- Wyoming.Insectivora, Fossil -- West (U.S.)Insectivora, Fossil -- Canada.Mammals, Fossil -- Wyoming.Mammals, Fossil -- West (U.S.)Mammals, Fossil -- Canada.Paleontology -- Cretaceous -- Wyoming.Paleontology -- Cretaceous -- West (U.S.)Paleontology -- Cretaceous -- Canada.Paleontology -- Wyoming.Paleontology -- West (U.S.)Paleontology -- Canada.Paleontology -- Lance Formation (Colo. and Wyo.)text