By Leidy, Joseph. . Genre Mammals, Fossil / Nebraska / Chelonia (Genus) / Nebraska / Paleontology and 1 more . Names oreodon / animal / rhinoceros / basal / crest and 884 more

By Moodie, Roy Lee, 1880- . Genre Amphibians, Fossil / Paleontology / North America / Paleontology / Carboniferous . Names amphibia / type / america / mus / american and 3342 more

By Leidy, Joseph, 1823-1891 / Cope, E. D. (Edward Drinker), 1840-1897 / Lesquereux, Leo, 1806-1889 / Hayden, F. V. (Ferdinand Vandeveer), 1829-1887 / Thomas, C. and 5 more . Genre n-usp-- / Paleontology / Western states / Paleobotany / Western states and 2 more . Names american / apex / type / axis / area and 4805 more

By Keyes, Charles, 1864-1942 . Genre n------ / Paleontology / North America / Bibliography / Palontologie and 2 more . Names american / fossils / america / mus / ix and 6760 more

Genre n-us--- / Geology / United States / Paleontology / United States . Names plants / fish / fin / sp / trias and 3138 more

Genre n-us--- / Geology / United States / Paleontology / United States . Names type / xx / american / crest / fossa and 6299 more

By Hay, Oliver Perry, 1846-1930 . Genre Paleontology / Pleistocene / Paleontology / North America / Vertebrates, Fossil . Names fossils / bison / age / indet / mus and 32041 more

By Leidy, Joseph, 1823-1891 . Genre n-us--- / Reptiles, Fossil / Paleontology / Cretaceous / Paleontology and 1 more . Names planes / xx / apex / reptiles / robust and 1849 more

Genre n-us--- / Geology / United States / Paleontology / United States . Names area / rock / fossils / golden / age and 3311 more

By Cope, E. D. (Edward Drinker), 1840-1897 . Genre Paleontology / Anguilla / Anguilla / Antiquities . Names fossa / latidens / amblyrhiza / trochanter / animal and 569 more