| Species (N=6) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Gyrinophilus porphyriticus | 36.5 | 63.5 | 269 | 147 | 361 | 364 | 18.5 |
| Hemidactylium scutatum | 37.1 | 62.9 | 275 | 148 | 373 | 345 | 8.9 |
| Phaeognathus hubrichti | 34.7 | 65.3 | 256 | 140 | 376 | 369 | 19.7 |
| Plethodon cinereus | 34.6 | 65.4 | 262 | 132 | 397 | 347 | 25.0 |
| Plethodon elongatus | 35.8 | 64.2 | 272 | 137 | 377 | 357 | 13.3 |
| Pseudotriton ruber | 35.4 | 64.6 | 260 | 144 | 375 | 363 | 20.1 |