Date,Theropods,Sauropodomorphs,Ornithischians 1835,3,0,3 1840,1,0,1 1845,1,3,0 1850,0,2,2 1855,1,2,2 1860,5,0,5 1865,1,1,6 1870,2,2,6 1875,2,4,11 1880,8,15,10 1885,4,3,13 1890,13,10,21 1895,1,7,13 1900,2,4,4 1905,14,13,16 1910,8,5,21 1915,12,10,43 1920,6,2,29 1925,12,6,46 1930,7,46,20 1935,26,23,35 1940,9,9,18 1945,2,13,57 1950,4,22,17 1955,17,15,8 1960,26,29,29 1965,27,57,30 1970,68,4,111 1975,44,16,45 1980,50,20,69 1985,59,59,85 1990,79,32,134 1995,119,39,109 2000,274,170,202 2005,321,137,249 2010,224,112,225 2015,199,88,186