| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| what era was 250 million years ago | 0.47 | 0.1 | 7814 | 78 |
| 250 million years ago era | 0.73 | 0.2 | 4020 | 72 |
| what era was 540 million years ago | 1.55 | 0.3 | 2916 | 9 |
| what era was 55 million years ago | 0.46 | 0.2 | 1355 | 17 |
| what era was 1 million years ago | 1.36 | 0.5 | 97 | 81 |
| what era was 65 million years ago | 0.26 | 1 | 2567 | 5 |
| what era was 40 million years ago | 0.15 | 0.8 | 3470 | 61 |
| what era was 530 million years ago | 1 | 0.8 | 3803 | 64 |
| what era was 2.5 million years ago | 0.25 | 0.7 | 7404 | 90 |
| what era was 10 million years ago | 1.94 | 0.3 | 6875 | 17 |
| what era was 80 million years ago | 0.53 | 0.5 | 4319 | 10 |
| what era was 3 million years ago | 0.32 | 0.1 | 2579 | 98 |
| what era was 66 million years ago | 0.44 | 0.5 | 4181 | 92 |
| what period was 50 million years ago | 1.48 | 0.6 | 8623 | 14 |
| what period was 300 million years ago | 1.58 | 0.9 | 2272 | 8 |
| what period was 150 million years ago | 1.75 | 0.2 | 4047 | 58 |
| what period was 200 million years ago | 0.55 | 0.7 | 7692 | 70 |
