| Species (N=33) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Apalone ferox | 39.0 | 61.0 | 419 | 119 | 330 | 513 | 26.2 |
| Apalone spinifera | 39.2 | 60.8 | 415 | 126 | 338 | 502 | 25.2 |
| Caretta caretta | 36.6 | 63.4 | 378 | 128 | 377 | 498 | 37.0 |
| Chelodina longicollis | 36.8 | 63.2 | 372 | 136 | 384 | 489 | 37.0 |
| Chelonia mydas | 37.6 | 62.4 | 391 | 128 | 366 | 496 | 75.0 |
| Chelus fimbriata | 39.3 | 60.7 | 411 | 132 | 357 | 481 | 35.8 |
| Chelydra serpentina | 35.8 | 64.2 | 357 | 138 | 395 | 494 | 47.0 |
| Chrysemys picta | 39.4 | 60.6 | 399 | 145 | 356 | 481 | 61.0 |
| Cuora amboinensis | 40.4 | 59.6 | 402 | 161 | 357 | 472 | 38.2 |
| Cuora flavomarginata | 39.3 | 60.7 | 373 | 168 | 374 | 462 | 19.1 |
| Cuora trifasciata | 39.9 | 60.1 | 382 | 168 | 364 | 463 | 31.8 |
| Cyclemys dentata | 38.9 | 61.1 | 368 | 168 | 376 | 465 | 14.7 |
| Indotestudo forstenii | 38.0 | 62.0 | 384 | 140 | 367 | 487 | 32.9 |
| Kinosternon leucostomum | 35.0 | 65.0 | 348 | 131 | 384 | 505 | 19.2 |
| Lissemys punctata | 38.2 | 61.8 | 404 | 123 | 355 | 499 | 17.8 |
| Macrochelys temminckii | 37.2 | 62.8 | 368 | 146 | 382 | 485 | 70.3 |
| Malacochersus tornieri | 37.3 | 62.7 | 376 | 139 | 364 | 500 | 25.9 |
| Manouria emys | 40.0 | 60.0 | 395 | 156 | 349 | 478 | 19.9 |
| Mauremys japonica | 39.7 | 60.3 | 381 | 166 | 372 | 458 | 16.2 |
| Mauremys mutica | 40.8 | 59.2 | 396 | 166 | 354 | 461 | 22.1 |
| Notochelys platynota | 37.2 | 62.8 | 364 | 148 | 394 | 471 | 18.8 |
| Palea steindachneri | 37.1 | 62.9 | 387 | 126 | 368 | 500 | 41.0 |
| Pelomedusa subrufa | 39.0 | 61.0 | 405 | 132 | 383 | 458 | 20.1 |
| Pelusios castaneus | 39.6 | 60.4 | 414 | 135 | 389 | 448 | 41.0 |
| Platemys platycephala | 42.1 | 57.9 | 440 | 140 | 349 | 449 | 20.0 |
| Platysternon megacephalum | 40.0 | 60.0 | 383 | 169 | 368 | 461 | 27.0 |
| Sacalia bealei | 38.9 | 61.1 | 381 | 152 | 364 | 474 | 27.3 |
| Sternotherus carinatus | 36.2 | 63.8 | 366 | 130 | 376 | 500 | 29.3 |
| Testudo graeca | 35.8 | 64.2 | 361 | 133 | 384 | 500 | 127.0 |
| Testudo kleinmanni | 37.3 | 62.7 | 368 | 146 | 380 | 484 | 21.0 |
| Testudo marginata | 38.5 | 61.5 | 382 | 148 | 365 | 483 | 21.2 |
| Trachemys scripta | 38.3 | 61.7 | 390 | 139 | 366 | 486 | 41.3 |
| Trionyx triunguis | 43.3 | 56.7 | 463 | 135 | 292 | 491 | 50.6 |