| Species (N=6) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Gyrinophilus porphyriticus | 39.8 | 60.2 | 545 | 432 | 545 | 935 | 18.5 |
| Hemidactylium scutatum | 37.4 | 62.6 | 480 | 423 | 573 | 937 | 8.9 |
| Phaeognathus hubrichti | 34.5 | 65.4 | 461 | 393 | 652 | 965 | 19.7 |
| Plethodon cinereus | 38.1 | 61.9 | 513 | 400 | 593 | 892 | 25.0 |
| Plethodon elongatus | 37.8 | 62.2 | 508 | 414 | 581 | 935 | 13.3 |
| Pseudotriton ruber | 38.0 | 61.9 | 512 | 420 | 562 | 956 | 20.1 |