New dinosaur discoveries between 1835 and 2015
0
10
20
30
40
50
60
70
80
90
100
110
120
130
140
150
160
1840
1850
1860
1870
1880
1890
1900
1910
1920
1930
1940
1950
1960
1970
1980
1990
2000
2010
Number of new species identified
Number of new species identified