| Keyword | CPC | PCC | Volume | Score | Length of keyword |
|---|---|---|---|---|---|
| amphibians synapsid skulls | 0.44 | 0.2 | 7880 | 85 | 26 |
| amphibians | 1.61 | 0.7 | 1073 | 29 | 10 |
| synapsid | 0.04 | 0.6 | 1314 | 65 | 8 |
| skulls | 1.14 | 0.4 | 425 | 57 | 6 |
| Keyword | CPC | PCC | Volume | Score |
|---|---|---|---|---|
| amphibians synapsid skulls | 1.33 | 0.5 | 4005 | 35 |
