Check list of the invertebrate fossils of North America: Eocene and Oligocene - 1866
Arrangement of the families of fishes, or Classes Pisces, Marsipobranchii, and Leptocardii - 1872
Arrangement of the Families of Mammals - 1872
Paleontological collections from Europe - 1904
On siluric and devonic Cystidea and Camarocrinus - 1904
On new and old middle Devonic crinoids - 1904
Diagnosis of a new genus and species of fossil sea-lion from the Miocene of Oregon - 1905
Diagnosis of a new genus and species of fossil sea-lion from the Miocene of Oregon - 1907
An apparently new protoblattid family from the Lower Cretaceous - 1908
Cambrian Geology and Paleontology: Cambrian Trilobites - 1908
Cambrian Brachiopoda: descriptions of new genera and species - 1908
New species of rodents and carnivores from equatorial Africa - 1911
Middle Cambrian Holothurians and Medusae - 1911
The genera of fossil whalebone whales allied to Balaenoptera - 1912
Cambrian geology and paleontology. II. New York Potsdam Hoyt fauna - 1912
Notes on an unusually fine slab of fossil crinoids - 1913
An Extinct American Eland (with one plate) - 1913
New antelopes and carnivores from British East Africa - 1913
Diagnosis of a new beaked whale of the genus Mesoplodon from the coast of North Carolina - 1913
A new ceratopsian dinosaur from the Upper Cretaceous of Montana, with note on Hypacrosaurus - 1914
A fossil hunting expedition in Montana - 1914
New species of mammals from equatorial Africa - 1914
A new river-dolphin from China - 1918
Cambrian geology and paleontology. No. 5 – Middle Cambrian algae - 1919
A new sauropod dinosaur from the Ojo Alamo Formation of New Mexico - 1922
Description of an apparently new toothed cetacean from South Carolina - 1923
The telescoping of the cetacean skull - 1923
On the fossil crinoid family Catillocrinidae - 1923
Cambrian and Ozarkian Brachiopoda, Ozarkian Cephalopods and Notostraca - 1924
Collecting fossil footprints in Virginia - 1925
Expedition to the Dinosaur National Monument, Utah - 1925
Geological fieldwork in Tennessee - 1925
Under suspension Simia, Simia satyrus and Pithecus are suppressed - 1929
The avifauna of the Pleistocene in Florida - 1931
Pliocene bird remains from Idaho - 1933
Nomenclature of some Cambrian trilobites - 1935
The Ptarmigania strata of the northwestern Wasatch Mountains - 1939
The Spence Shale and its fauna - 1939
New fossil lizards from the Upper Cretaceous of Utah - 1940
A new carnivorous dinosaur from the Lance Formation of Montana - 1946
Further new Cambrian bellerophont gastropods - 1948
Remains of land mammals from the Miocene of the Miocene of the Chesapeake Bay Region - 1950
Middle Cambrian stratigraphy and faunas of the Canadian Rocky Mountains - 1951
The Lower Eocene Knight Formation Of Western Wyoming and Its Mammalian Faunas - 1952
The Pleistocene marine fauna of Wailes Blff and Langley Bluff, Maryland - 1953
A new Devonian crinoid from western Maryland - 1953
A giant Permian fusuline from Sonora. Permian fauna at El Antimonio, western Sonora, Mexico - 1953
The Tillodontia: an early Tertiary order of mammals - 1953
Gastropoda. Permian fauna at El Antimonio, western Sonora, Mexico - 1953
Cephalopoda. Permian fauna at El Antimonio, western Sonora, Mexico - 1953
Two silicified Carboniferous trilobites from West Texas - 1954
New Cretaceous Brachiopoda from Arizona - 1955
A review of the Upper Eocene Artiodactyla of North America - 1955
The upper Paleocene Mammalia from the Almy formation in western Wyoming - 1956
Palaeocene mammalian faunas of the Bison Basin in south-central Wyoming - 1956
A skull of the Bridger Middle Eocene creodont, Patriofelis ulta Leidy - 1957
Miscellaneous notes on fossil birds - 1958
Genera of Tertiary and Recent rhynchonelloid brachiopods - 1959
A classification for the birds of the world - 1960
Notes on fossil and subfossil birds - 1962
Notes on fossil and subfossil birds - 1962
A Further Study Of The Lower Eocene Mammalian Faunas Of Southwestern Wyoming - 1962
Revision of the cassiduloid echinoids - 1962
A study of the Eocene condylarthran mammal Hyopsodus - 1968
Fossil vertebrates from the marine Pleistocene of southeastern Virginia - 1968