| A review of the middle and upper Eocene primates of North America CL Gazin Smithsonian Miscellaneous Collections, 1958 | 153 | 1958 |
| A review of the upper Eocene Artiodactyla of North America CL Gazin Smithsonian Miscellaneous Collections, 1955 | 107 | 1955 |
| The lower Eocene Knight Formation of western Wyoming and its mammalian faunas CL Gazin Smithsonian Miscellaneous Collections, 1952 | 92 | 1952 |
| The Tillodontia, an early Tertiary order of mammals CL Gazin Smithsonian Miscellaneous Collections, 1953 | 90 | 1953 |
| The late Cenozoic vertebrate faunas from the San Pedro Valley, Ariz CL Gazin Proceedings of the United States National Museum, 1942 | 87 | 1942 |
| The Pleistocene vertebrate fauna from Cumberland Cave, Maryland JW Gidley, CL Gazin Bulletin of the United States National Museum, 1938 | 84 | 1938 |
| Paleocene mammalian faunas of the Bison Basin in south-central Wyoming CL Gazin Smithsonian Miscellaneous Collections, 1956 | 78 | 1956 |
| A study of the Eocene condylarthran mammal Hyopsodus CL Gazin Smithsonian Miscellaneous Collections, 1968 | 77 | 1968 |
| A further study of the lower Eocene mammalian faunas of southwestern Wyoming CL Gazin Smithsonian Miscellaneous Collections, 1962 | 71 | 1962 |
| Exploration for the remains of giant ground sloths in Panama CL Gazin Smithsonian Institution Annual Report, Publication 4772, 344-354, 1957 | 68 | 1957 |
| A study of the early Tertiary condylarthran mammal Meniscotherium CL Gazin Smithsonian Miscellaneous Collections, 1965 | 65 | 1965 |
| The mammalian faunas of the Paleocene of central Utah, with notes on the geology CL Gazin Proceedings of the United States National Museum, 1941 | 50 | 1941 |
| Mammalian faunal zones of the Bridger Middle Eocene C Lewis Gazin Smithsonian Contributions to Paleobiology, 1976 | 47 | 1976 |
| New mammalia in the Pleistocene fauna from Cumberland Cave JW Gidley, CL Gazin Journal of Mammalogy 14 (4), 343-357, 1933 | 43 | 1933 |
| Paleocene primates from the Shotgun Member of the Fort Union Formation in the Wind River Basin, Wyoming CL Gazin Proceedings of the Biological Society of Washington 84 (3), 13-38, 1971 | 42 | 1971 |
| The Geology and vertebrate paleontology of upper Eocene strata in the northeastern part of the Wind River Basin, Wyoming CL Gazin Smithsonian Miscellaneous Collections, 1956 | 42 | 1956 |
| A study of the fossil horse remains from the Upper Pliocene of Idaho CL Gazin Proceedings of the United States National Museum, 1936 | 42 | 1936 |
| A Miocene mammalian fauna from southeastern Oregon CL Gazin Carnegie Institution of Washington Publications 418, 37-86, 1932 | 37 | 1932 |
| Paleontological exploration and dating of the early Tertiary deposits in basins adjacent to the Uinta Mountains CL Gazin Utah Geological Association, 1959 | 36 | 1959 |
| Paleocene mammals from the Denver Basin, Colorado CL Gazin Journal of the Washington Academy of Sciences 31 (7), 289-295, 1941 | 32 | 1941 |
