What epoch did humans appear?

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Tags

1. #modern
2. #which
3. #epoch
4. #broken
5. #started
6. #dinosaurs
7. #pliocene
8. #periods
9. #quaternary
10. #anatomically
11. #first
12. #extinction
13. #humans
14. #cenozoic
15. #homonins
16. #epochs
17. #pleistocene