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

By Leidy, Joseph, 1823-1891 . Genre Parasites . Names animals / julus / enterobryus / elegans / life and 661 more

By Leidy, Joseph, 1823-1891 . Genre Parasites . Names animals / enterobryus / julus / life / animal and 676 more

By Leidy, Joseph, 1823-1891 . Genre Vertebrates, Fossil / Paleontology / Cretaceous / Paleontology / Tertiary and 2 more . Names animal / fossils / xx / intermediate / animals and 2731 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 crest / fossa / diastema / american / apex and 9423 more