Era
- 19th century 9 results
- 20th century 4 results
- 1910-1981 2 results
- 1928- 2 results
- Cretaceous 2 results
- Pleistocene 2 results
- 1840-1919 1 results
- 1851-1944 1 results
- 1866- 1 results
- 1913-1983 1 results
- 1932-1995 1 results
- 1943- 1 results
- 1945- 1 results
- 1970- 1 results
- Cenozoic 1 results
- Devonian 1 results
- Eocene 1 results
- Miocene 1 results
- Oligocene 1 results
- Paleocene 1 results