A Catalogue of the Mesozoic and Cenozoic Plants of North America

Flora of the Montana Formation

Remarks on the Fossil Turtles Accredited to the Judith River Formation

... the Stratigraphic Relations and Paleontology of the Hell Creek Beds, Ceratops Beds and Equivalents

Jurassic Flora of Cape Lisburne, Alaska

Collected Papers, Volume 2

Plants of the past

Plants of the Past, a Popular Account of Fossil Plants