Eucommia eocenica List of the Cenozoic life of Wyoming List of the Cenozoic life of Colorado List of the Cenozoic life of Montana List of the Cenozoic life of Washington 1929 in paleontology Grünbach Formation 1930 in paleontology Paleoflora of the Eocene Okanagan Highlands 1926 in paleontology 1952 in paleobotany