Era
- 20th century 315 results
- 19th century 187 results
- 21st century 88 results
- 18th century 62 results
- 1945- 40 results
- Cretaceous 30 results
- 17th century 26 results
- 1853-1876 25 results
- 1876-1907 18 results
- Quaternary 17 results
- Holocene 14 results
- Tertiary 14 results
- 1564-1616 13 results
- 1876-1918 13 results
- 1946- 13 results
- 1840-1876 12 results
- Eocene 12 results
- 1724-1804 11 results
- Paleocene 11 results
- 1907-1939 10 results
- 1991- 10 results
- To 1500 10 results
- 1918-1945 9 results
- 1929 9 results
- 1939- 9 results
- 1943- 9 results
- 1972- 9 results
- Middle Ages, 600-1500 9 results
- To 1840 9 results
- 1940-1970 8 results
- 1949- 8 results
- 1760-1789 7 results
- 1888-1965 7 results
- 1931- 7 results
- 1948- 7 results
- 1967- 7 results
- 1984- 7 results
- 1989- 7 results
- Oligocene 7 results
- Pleistocene 7 results
- 1812-1870 6 results
- 1859-1952 6 results
- 1868-1912 6 results
- 1888-1923 6 results
- 1889-1951 6 results
- 1906-1939 6 results
- 1906-1989 6 results
- 1926- 6 results
- 1940- 6 results
- 1944- 6 results more…