Era
- 21st century 19 results
- 20th century 11 results
- Holocene 7 results
- Anthropocene 5 results
- 2000- 3 results
- 18th century 2 results
- 1945- 2 results
- 1945-1989 2 results
- 1976-2000 2 results
- 1989- 2 results
- 1993- 2 results
- 19th century 2 results
- 2002- 2 results
- Quaternary 2 results
- 1769-1859 1 results
- 17th century 1 results
- 1859-1952 1 results
- 1900-1991 1 results
- 1921-1997 1 results
- 1939- 1 results
- 1948- 1 results
- 1950- 1 results
- 1972- 1 results
- 1975- 1 results
- 1976-2002 1 results
- 1981-2001 1 results
- 1982- 1 results
- 1984- 1 results
- 2000-2099 1 results
- 2001-2009 1 results
- Early modern, 1500-1700 1 results
- To 1500 1 results