| Species (N=6) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Gyrinophilus porphyriticus | 38.5 | 61.5 | 346 | 242 | 407 | 531 | 18.5 |
| Hemidactylium scutatum | 37.3 | 62.7 | 331 | 232 | 423 | 524 | 8.9 |
| Phaeognathus hubrichti | 35.9 | 64.1 | 326 | 226 | 432 | 553 | 19.7 |
| Plethodon cinereus | 34.8 | 65.2 | 316 | 216 | 446 | 552 | 25.0 |
| Plethodon elongatus | 35.8 | 64.2 | 320 | 225 | 433 | 543 | 13.3 |
| Pseudotriton ruber | 37.1 | 62.9 | 333 | 231 | 423 | 534 | 20.1 |