| Species (N=5) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Alligator mississippiensis | 43.5 | 56.5 | 229 | 66 | 179 | 204 | 73.1 |
| Alligator sinensis | 45.2 | 54.8 | 225 | 84 | 184 | 191 | 60.7 |
| Caiman crocodilus | 43.6 | 56.4 | 246 | 52 | 164 | 222 | 24.1 |
| Paleosuchus palpebrosus | 45.2 | 54.8 | 249 | 60 | 153 | 222 | 24.1 |
| Paleosuchus trigonatus | 47.4 | 52.6 | 263 | 61 | 142 | 218 | 30.9 |