| Species (N=6) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Gyrinophilus porphyriticus | 37.4 | 62.6 | 360 | 153 | 407 | 452 | 18.5 |
| Hemidactylium scutatum | 34.4 | 65.6 | 308 | 162 | 447 | 449 | 8.9 |
| Phaeognathus hubrichti | 32.0 | 68.0 | 295 | 144 | 476 | 457 | 19.7 |
| Plethodon cinereus | 37.6 | 62.4 | 357 | 151 | 415 | 427 | 25.0 |
| Plethodon elongatus | 35.5 | 64.5 | 332 | 156 | 444 | 443 | 13.3 |
| Pseudotriton ruber | 34.6 | 65.3 | 323 | 153 | 432 | 465 | 20.1 |