The Oligocene Bridge Creek flora of the John Day Formation, Oregon / Herbert W. Meyer and Steven R. Manchester. Meyer, Herbert W. (Herbert William), 1954- Manchester, Steven R., 1956- Plants, Fossil Oregon. Paleobotany Oligocene. QE928 .M49 1997 561.19795 21 MEO Includes bibliographical references (p. 175-191) and index. Berkeley : University of California Press, 1997. 1997. 1997 Text xvi, 195 p., 75 p. of plates : eng University of California publications in geological sciences ; v. 141 John Day Formation (Or.) Oregon.