| Loomis F. B. (1911) The camels of the Harrison beds, with three new species, American Journal of Science 31 181, 65-70 doi:10.2475/ajs.s4-31.181.65 |
| Lambe L. M. (1913) Description of a new species of Testudo, and of a remarkable specimen of Stylemys Nebrascensis, from the Oligocene of Wyoming, The Ottawa Naturalist 14, 57-63 |
| Lull R. S. (1915) The mammals and horned dinosaurs of the Lance Formation of Niobrara County, Wyoming, The American Journal of Science, series 4 40 238, 319-348 |
| Romer A. S. (1926) A lower Miocene horse, Anchitherium agatense (Osborn), American Journal of Science 212 12, 325-355 doi:10.2475/ajs.s5-12.70.325 |
| Romer A. S., Sutton A. H. (1927) A new arctoid carnivore from the Lower Miocene, The American Journal of Science, series 5 14 84, 459-464 |
| Romer A. S., McCormack J. T. (1928) A large Palaeocastor from the Lower Miocene, The American Journal of Science, series 5 15 85, 58-60 |
| Bump B., Loomis F. B. (1930) Variation in the species of Merycoidodon, American Journal of Science 220 |
| Frick C. (1937) Horned ruminants of North America, Bulletin of the American Museum of Natural History 69, 1-669 |
| Riggs E. S. (1945) Some early Miocene carnivores, Geological Series, Field Museum of Natural History 9 3, 69-114 |
| Schultz C. B., Falkenbach C. H. (1947) Merychyinae, a subfamily of oreodonts, Bulletin of the American Museum of Natural History 88 4, 157-286 |
| Schultz C. B., Falkenbach C. H. (1949) Promerycochoerinae, a new subfamily of oreodonts, Bulletin of the American Museum of Natural History 93 3, 69-198 |
| Schultz C. B., Falkenbach C. H. (1950) Phenacocoelinae, a new subfamily of oreodonts, Bulletin of the American Museum of Natural History 95 3 |
| Schultz C. B., Falkenbach C. H. (1954) Desmatochoerinae, a new subfamily of oreodonts, Bulletin of the American Museum of Natural History 105 2 |
| Schultz C. B., Falkenbach C. H. (1956) Miniochoerinae and Oreonetinae two new subfamilies of oreodonts, Bulletin of the American Museum of Natural History 109 4, 373-482 |
| Goin C. J., Auffenberg W. (1958) New salamanders of the family Sirenidae from the Cretaceous of North America, Fieldiana: Geology 10 33, 449-459 |
| Estes R. (1964) Fossil vertebrates from the Late Cretaceous Lance Formation, eastern Wyoming, University of California Publications in Geological Sciences 49, 1-187 |
| Clemens W. A. (1964) Fossil mammals of the type Lance Formation, Wyoming. Part I. Introduction and Marsupialia, University of California Publications in Geological Sciences 48, 1-105 |
| Clemens W. A. (1966) Fossil mammals from the type Lance Formation, Wyoming. Part II. Marsupialia, University of California Publications in Geological Sciences 62, 1-122 |
| Cracraft J. (1968) A review of the Bathornithidae (Aves, Gruiformes), with remarks on the relationships of the suborder Cariamae, American Museum Novitates 2326, 1-46 |
| Schultz C. B., Falkenbach C. H. (1968) The Phylogeny of the Oreodonts. Part 1: Merycoidodontinae, Eporeodontinae, and Leptaucheniinae, Three Subfamilies Of Oreodonts, With an Appendix to the Revision Of The Merycoidodontidae, and Part 2. Summary and Conclusions Concerning the Merycoidodontidae, Bulletin of the American Museum of Natural History 139, 1-498 |
| Frick C., Taylor B. E. (1968) A Generic Review of the Stenomyline Camels, American Museum Novitates 2353, 1-51 |
| Clark J., Guensburg T. E. (1972) Arctoid genetic characters as related to the genus Parictis, Fieldiana 26 1, 1-71 |
| Clemens W. A. (1973) Fossil mammals of the type Lance Formation, Wyoming. Part III. Eutheria and summary, University of California Publications in Geological Sciences 94, 1-102 |
| Patton T. H., Taylor B. E. (1973) The Protoceratinae (Mammalia, Tylopoda, Protoceratidae) and the systematics of the Protoceratidae, Bulletin of the American Museum of Natural History 150 4 |
| Edwards P. (1976) The subfamily Leptochoerinae (Artiodactyla, Dichobunidae) of North America (Oligocene), Contributions to Geology, University of Wyoming 14 2, 99-113 |
| Coombs M. C. (1978) Reevaluation of Early Miocene North American Moropus (Perissodactyla, Chalicotheriidae, Schizotheriinae), Bulletin of the Carnegie Museum of Natural History 4, 1-62 |
| Sullivan R. M. (1979) Revision of the Paleogene genus Glyptosaurus (Reptilia, Anguidae), Bulletin of the American Museum of Natural History 163 1, 1-72 |
| Carpenter K. (1982) Baby dinosaurs from the Late Cretaceous Lance and Hell Creek formations and a description of a new species of theropod, Contributions to Geology, University of Wyoming 20 2, 123-134 |
| Estes R., Sanchíz B. (1982) New discoglossid and palaeobatrachid frogs from the Late Cretaceous of Wyoming and Montana, and a review of other frogs from the Lance and Hell Creek Formations, Journal of Vertebrate Paleontology 2 1, 9-20 |
| Wahlert J. H. (1983) Relationships of the Florentiamyidae (Rodentia, Geomyoidea) based on cranial and dental morphology, American Museum Novitates 2769, 1-23 |
| Whitmore J. L. (1985) , Dakoterra 2 2 |
| Wahlert J. H., Souza R. A. (1988) Skull morphology of Gregorymys and relationships of the Entoptychinae (Rodentia, Geomyidae), American Museum Novitates 2922, 1-13 |
| Prothero D. R., Guerin C., et al (1989) The history of the Rhinocerotoidea, The Evolution of Perissodactyls, 321-340 |
| Wang X. (1994) Phylogenetic systematics of the Hesperocyoninae (Carnivora: Canidae), Bulletin of the American Museum of Natural History 221, 1-207 |
| Hunt, Jr. R. M., Skolnick R. (1996) The giant mustelid Megalictis from the Early Miocene carnivore dens at Agate Fossil Beds National Monument, Nebraska: earliest evidence of dimorphism in New World Mustelidae (Carnivora, Mammalia), Contributions to Geology, University of Wyoming 31 1, 35-48 |
| Prothero D. R. (1996) Camelidae, The Terrestrial Eocene-Oligocene Transition in North America, 609-651 |
| Xu X. (1996) Castoridae, The Terrestrial Eocene-Oligocene Transition in North America, 412-432 doi:10.1017/CBO9780511665431.021 |
| Albright L. B. (1996) Insectivores, rodents, and carnivores of the Toledo Bend Local Fauna: an Arikareean (earliest Miocene) assemblage from the Texas Coastal Plain, Journal of Vertebrate Paleontology 16 3, 458-473 doi:10.1080/02724634.1996.10011334 |
| Hunt, Jr. R. M. (1998) Amphicyonidae, 196-227 |
| Albright L. B. (1998) New genus of tapir (Mammalia: Tapiridae) from the Arikareean (earliest Miocene) of the Texas Coastal Plain, Journal of Vertebrate Paleontology 18 1, 200-217 doi:10.1080/02724634.1998.10011044 |
| Albright L. B. (1999) Ungulates of the Toledo Bend local fauna (late Arikareean, early Miocene), Texas Coastal Plain, Bulletin of the Florida Museum of Natural History, Biological Sciences 42 1, 1-80 |
| Wang X., Tedford R. H., et al (1999) Phylogenetic systematics of the Borophaginae (Carnivora: Canidae), Bulletin of the American Museum of Natural History 243, 1-392 |
| MacFadden B. J. (2001) Three-toed browsing horse Anchitherium clarencei from the early Miocene (Hemingfordian) Thomas Farm, Florida, Bulletin of the Florida Museum of Natural History 43 3, 79-109 |
| Alroy J. (2002) Synonymies and reidentifications of North American fossil mammals |
| Hope S. (2002) The Mesozoic radiation of Neornithes, Mesozoic Birds: Above the Heads of Dinosaurs. University of California Press, Berkeley, 339-388 |
| Holroyd P. A., Hutchison J. H. (2002) Patterns of geographic variation in latest Cretaceous vertebrates: evidence from the turtle component, Geological Society of America Special Paper 361, 177-190 |
| Martin L. D., Lim J.-D. (2004) New insectivores from the Early Miocene of Nebraska, USA and the Hemingfordian faunal exchange, Mammalian Biology 69 3, 202-209 |
| Prothero D. R. (2005) The Evolution of North American Rhinoceroses, 1-218 |
| Alroy J. (2007) Synonymies and reidentifications of North American fossil vertebrates and so forth |
| Korth W. W. (2008) Mammals from the Blue Ash local fauna (late Oligocene), South Dakota. Rodentia, Part 2: Families Florentiamyidae and Geomyidae, Paludicola 7 1, 14-25 |
| Tedford R. H., Wang X., et al (2009) Phylogenetic Systematics of the North American Fossil Caninae (Carnivora: Canidae), Bulletin of the American Museum of Natural History 325, 1-218 doi:10.1206/574.1 |
| Hutchison J. H. (2009) New soft-shelled turtles (Plastomeninae, Trionychidae, Testudines) from the Cretaceous and Paleocene of North America, PaleoBios 29 2, 36-47 |
| Hunt, Jr. R. M. (2011) Evolution of Large Carnivores During the Mid-Cenozoic of North America: The Temnocyonine Radiation (Mammalia, Amphicyonidae), Bulletin of the American Museum of Natural History 358, 1-153 doi:10.1206/358.1 |
| Prothero D. R. (2015) Evolution of the Early Miocene Hesperhyine Peccaries, New Mexico Museum of Natural History and Science Bulletin 67, 235-255 |
