Era
- 17th century 10 results
- 18th century 7 results
- 20th century 5 results
- 16th century 4 results
- Holocene 3 results
- 1642-1727 2 results
- 19th century 2 results
- Cenozoic 2 results
- 1564-1642 1 results
- 15th century 1 results
- 1945- 1 results
- 1989- 1 results
- Carboniferous 1 results
- Mesozoic 1 results
- Neogene 1 results
- Paleozoic 1 results
- Permian 1 results
- Quaternary 1 results