The origin of the fittest; essays on evolution - Cope, E. D. (Edward Drinker), 1840 -1897 (D. Appleton, 1887)

Ornithomimosaur cranial material from Ukhaa Tolgod (Omnogov, Mongolia) - Mongolian-American Museum Paleontological Project. (American Museum of Natural History, 2004)

Osteology and relationships of Byronosaurus jaffei (Theropoda, Troodontidae) - Mongolian-American Museum Paleontological Project. (American Museum of Natural History, 2003)

Osteology of a new late Cretaceous troodontid specimen from Ukhaa Tolgod, Om̈nog̈ovi Aimag, Mongolia - Norell, Mark A. (American Museum of Natural History, 2017)

The osteology of Alioramus, a gracile and long-snouted tyrannosaurid (Dinosauria, Theropoda) from the late Cretaceous of Mongolia - Mongolian-American Museum Paleontological Project. (American Museum of Natural History, 2012)

The osteology of Haya griva (Dinosauria: Ornithischia) from the Late Cretaceous of Mongolia / Daniel E. Barta and Mark A. Norell - Norell, Mark A. (American Museum of Natural History, 2021)

Osteology of pteranodon - Eaton, George Francis, 1872 - (1910)

Osteology of the carnivorous Dinosauria in the United States National museum : with special reference to the genera Antrodemus (Allosaurus) and Ceratosaurus - Gilmore, Charles W. (Charles Whitney), 1874 -1945 (Govt. print. off, 1920)

The osteology of the reptiles - Gregory, William K. (William King), 1876 -1970 (Harvard University Press, 1925)

Othniel Charles Marsh - Beecher, Charles Emerson, 1856 -1904 (1899)

Othniel Charles Marsh - Beecher, Charles Emerson, 1856 -1904 (s.n, 1899)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1893)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1896)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1895)

The Ottawa naturalist - Ottawa Field-Naturalists' Club (Ottawa Field-Naturalists' Club, 1899)

Our country's animals and how to know them. A guide to the mammals, reptiles and amphibians of Great Britain - Gordon, W. J. (Simpkin, Marshall, Hamilton, Kent, 1904)

Outlines of comparative anatomy and medical zoology - Allen, Harrison, 1841 -1897 (Lippincott, 1874)

Outlines of comparative anatomy and medical zoology - Allen, Harrison, 1841 -1897 (J.B. Lippincott & co, 1869)

Outlines of evolutionary biology - Dendy, Arthur, 1865 -1925 (D. Appleton and company, 1914)

Outlines of evolutionary biology - Dendy, Arthur, 1865 -1925 (D. Appleton and company, 1912)

Outlines of evolutionary biology - Dendy, Arthur, 1865 -1925 (Constable, 1912)

Outlines of general zoology - Baird, Spencer Fullerton, 1823 -1887 (Rudolph Garrigue, 1851)

Outlines of vertebrate palæontology for students of zoology - Woodward, Arthur Smith, 1864 -1944 (University Press, 1898)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1892)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Pentland, 1899)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1892)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Appleton, 1916)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Young J. Pentland, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (H. Frowde and Hodder & Stoughton, 1899)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton & Co, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (H. Frowde and Hodder & Stoughton, 1921)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton, 1895)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (D. Appleton, 1906)

Outlines of zoology - Thomson, J. Arthur (John Arthur), 1861 -1933 (Humphrey Milford, Oxford University Press, 1929)

An oviraptorid skeleton from the late Cretaceous of Ukhaa Tolgod, Mongolia, preserved in an avianlike brooding position over an oviraptorid nest - Chiappe, Luis M. (American Museum of Natural History, 1999)

Palaeontographica Supplement (Theodor Fischer, 1877)

Palaeontographica (Theodor Fischer, 1892)

Palaeontographica (Theodor Fischer, 1908)

Palaeontology - Palaeontological Association (Palaeontological Association, 1974)

Palaeontology - Palaeontological Association (Palaeontological Association, 1975)

Palaeontology - Palaeontological Association (Palaeontological Association, 1978)

Palaeontology - Palaeontological Association (Palaeontological Association, 1980)

Palaeontology - Palaeontological Association (Palaeontological Association, 1982)

Palaeontology - Palaeontological Association (Palaeontological Association, 1985)

Palaeontology - Palaeontological Association (Palaeontological Association, 1986)

Palaeontology - Palaeontological Association (Palaeontological Association, 1987)

Palaeontology - Palaeontological Association (Palaeontological Association, 1991)

Palaeontology - Palaeontological Association (Palaeontological Association, 1992)

Palaeontology - Palaeontological Association (Palaeontological Association, 1993)