[On a marine animal discovered in the Alluvion of the Mississippi] - 1828
[A jaw of Mylodon annectens from the post-Tertiary rocks of South America] - 1869
[On the fossil Batrachia of North America] - 1869
[Concerning a discovery of certain fossil remains found in New Jersey] - 1869
[The remains of a new Cretaceous tortoise] - 1870
On some Reptilia of the Cretaceous formation of the United States - 1870
[Descriptions of Emys jaenesi, E. haydeni, Baena arenosa, and Saniwa ensidens] - 1870
Descriptions of fossil fishes from the upper Coal-Measures of Nebraska - 1870
Stated Meeting, Nov. 3d, 1871 - 1871
Note of some Cretaceous Vertebrata in the State Agricultural College of Kansas, U.S.A. - 1871
Observations on the distribution of certain extinct Vertebrata in North Carolina - 1871
Supplement to the "Synopsis of the Extinct Batrachia and Reptilia of North America" - 1871
On a new genus of Pleurodira from the Eocene of Wyoming - 1872
On the existence of Dinosauria in the transition beds of Wyoming - 1872
On the Tertiary coal and fossils of Osino, Nevada - 1872
On two new ornithosaurians from Kansas - 1872
Third account of new Vertebrata from the Bridger Eocene of Wyoming Territory - 1872
Second account of new Vertebrata from the Bridger Eocene - 1872
Descriptions of some new Vertebrata from the Bridger Group of the Eocene - 1872
Second Notice of Extinct Vertebrates from Bitter Creek, Wyoming - 1872
Notices of New Vertebrata from the Upper Waters of Bitter Creek, Wyoming Territory - 1872
Communication on the discovery of new Rocky Mountain fossils - 1872
Synopsis of the Vertebrata of the Miocene of Cumberland County, New Jersey - 1875
On the Vertebrata of the bone bed in eastern Illinois - 1877
On Amphicoelias, a genus of Saurians from the Dakota epoch of Colorado - 1877
Descriptions of New Vertebrata from the Upper Tertiary Formations of the West - 1877
On some new or little known reptiles and fishes of the Cretaceous no. 3, of Kansas - 1877
On reptilian remains from the Dakota Beds of Colorado - 1877
A continuation of researches among the Batrachia of the Coal Measures of Ohio - 1877
On a dinosaurian from the Trias of Utah - 1877
On a new species of Adocidae from the Tertiary of Georgia - 1877
On the batrachian foot tracks from the Ellengowan Shaft, in Schuylkill County, Pennsylvania - 1878
Descriptions of extinct Batrachia and Reptilia from the Permian formations of Texas - 1878
On some Saurians found in the Triassic of Pennsylvania, by C. M. Wheatley - 1878
On some of the characters of the Miocene fauna of Oregon - 1878
Descriptions of new species, in The Coleoptera of Michigan - 1878
Additional descriptions of new species - 1878
On the Vertebrata of the Dakota Epoch of Colorado - 1878
On the genera of the Creodonta - 1880
Second contribution to the history of the Vertebrata of the Permian formation of Texas - 1880
The systematic arrangement of the Order Perissodactyla - 1881
Third contribution to the history of the Vertebrata of the Permian formation of Texas - 1882
On the systematic relations of the Carnivora Fissipedia - 1882
On the structure of the skull in the Elasmobranch genus Didymodus - 1884
Second addition to the knowledge of the Puerco Epoch - 1884
A contribution to the vertebrate paleontology of Brazil - 1885
A contribution to the history of the Vertebrata of the Trias of North America - 1887
A review of the North American species of Hippotherium - 1889
Note on Hippotheirum rectidens - 1889
Skull of the dinosaurian Laelaps incrassatus Cope - 1892
A contribution to the vertebrate paleontology of Texas - 1892
On some new and little known Paleozoic vertebrates - 1892
Phylogeny of an acquired characteristic - 1894
Tertiary Tipulidae, with special reference to those of Florissant, Colorado - 1894
Marine fossils from the coal measures of Arkansas - 1896
The reptilian order Cotylosauria - 1896
Second contribution to the history of the Cotylosauria - 1896
On Some Plistocene Mammalia from Petite Anse, La - 1896
On New Paleozoic Vertebrata from Illinois, Ohio and Pennsylvania - 1897
Preliminary Note on the Selenodont Artiodactyls of the Uinta Formation - 1898
A Cretaceous and lower Tertiary section in south central Montana - 1902
The Santa Cruz Typotheria - 1908
On the classification of the Cetacea - 1908
The marine Tertiary stratigraphy of the North Pacific coast of America - 1913
A new Hoplophoneus from the Titanotherium Beds - 1921
The small entelodonts of the White River Oligocene - 1922
Hyracodons from the Big Badlands of South Dakota - 1922
The mounted skeleton of a new Mesohippus from the Protoceras Beds - 1925
Omorhamphus, a new flightless bird from the Lower Eocene of Wyoming - 1928
A mounted skeleton of Palaeonictis - 1929
Upper Cretaceous dinosaur faunas of North America - 1930
American Eusmiloid Sabre-Tooth Cats of the Oligocene Epoch - 1933
A new turtle, Peritresius virginianus, from the Miocene of Virginia - 1936
Fossil Turtles from Maryland - 1936
More complete remains of Ophiura marylandica - 1939
Paleocene faunas of the Polecat Bench Formation, Park County, Wyoming - 1940
Paleocene faunas of the Polecat Bench Formation, Park County, Wyoming Part II. Lizards - 1942