| Species (N=93) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Agkistrodon piscivorus | 43.0 | 57.0 | 3523 | 1306 | 2728 | 3662 | 24.5 |
| Alligator mississippiensis | 43.5 | 56.5 | 3556 | 1393 | 2987 | 3445 | 73.1 |
| Alligator sinensis | 46.6 | 53.4 | 3750 | 1561 | 2881 | 3197 | 60.7 |
| Anguis fragilis | 45.8 | 54.2 | 3526 | 1686 | 2982 | 3183 | 54.0 |
| Anolis carolinensis | 39.2 | 60.8 | 2927 | 1507 | 3373 | 3515 | 7.2 |
| Apalone ferox | 39.8 | 60.2 | 3296 | 1212 | 2820 | 4000 | 26.2 |
| Apalone spinifera | 40.4 | 59.6 | 3321 | 1257 | 2814 | 3926 | 25.2 |
| Basiliscus vittatus | 41.5 | 58.5 | 3298 | 1408 | 2962 | 3681 | 9.1 |
| Blanus cinereus | 44.1 | 55.9 | 3565 | 1437 | 2716 | 3636 | 16.0 |
| Boa constrictor | 39.9 | 60.1 | 3078 | 1414 | 2668 | 4088 | 40.4 |
| Bungarus fasciatus | 35.2 | 64.8 | 2790 | 1164 | 3373 | 3911 | 13.2 |
| Bungarus multicinctus | 37.8 | 62.2 | 2992 | 1258 | 3229 | 3753 | 13.7 |
| Caiman crocodilus | 44.4 | 55.6 | 3782 | 1264 | 2762 | 3552 | 24.1 |
| Calotes versicolor | 41.1 | 58.9 | 3230 | 1393 | 2969 | 3649 | 5.0 |
| Caretta caretta | 39.6 | 60.4 | 3293 | 1206 | 2919 | 3929 | 37.0 |
| Chamaeleo chamaeleon | 37.7 | 62.3 | 3048 | 1210 | 2925 | 4098 | 3.6 |
| Chamaeleo dilepis | 36.5 | 63.5 | 2901 | 1216 | 3035 | 4124 | 4.0 |
| Chelodina longicollis | 38.2 | 61.8 | 2994 | 1312 | 3033 | 3948 | 37.0 |
| Chelonia mydas | 40.1 | 59.9 | 3360 | 1189 | 2872 | 3937 | 75.0 |
| Chelus fimbriata | 39.4 | 60.6 | 3193 | 1251 | 2871 | 3963 | 35.8 |
| Chelydra serpentina | 38.0 | 62.0 | 3020 | 1297 | 3196 | 3845 | 47.0 |
| Chlamydosaurus kingii | 41.2 | 58.8 | 3410 | 1238 | 2725 | 3916 | 9.9 |
| Chrysemys picta | 39.7 | 60.3 | 3185 | 1324 | 3048 | 3808 | 61.0 |
| Coleonyx variegatus | 44.0 | 56.0 | 3556 | 1432 | 2765 | 3580 | 15.2 |
| Crocodylus acutus | 43.4 | 56.6 | 3411 | 1530 | 2920 | 3530 | 32.9 |
| Crocodylus intermedius | 43.5 | 56.5 | 3406 | 1544 | 2921 | 3520 | 21.8 |
| Crocodylus moreletii | 43.7 | 56.3 | 3431 | 1540 | 2911 | 3494 | 25.4 |
| Crocodylus niloticus | 44.2 | 55.8 | 3458 | 1571 | 2881 | 3472 | 43.8 |
| Crocodylus novaeguineae | 44.1 | 55.9 | 3488 | 1539 | 2851 | 3510 | 24.6 |
| Crocodylus palustris | 43.9 | 56.1 | 3452 | 1543 | 2894 | 3493 | 31.5 |
| Crocodylus porosus | 44.2 | 55.8 | 3475 | 1552 | 2867 | 3488 | 41.7 |
| Crocodylus rhombifer | 43.6 | 56.4 | 3397 | 1566 | 2942 | 3483 | 38.2 |
| Crocodylus siamensis | 44.1 | 55.9 | 3465 | 1551 | 2876 | 3490 | 21.9 |
| Crotalus horridus | 43.6 | 56.4 | 3490 | 1360 | 2699 | 3563 | 30.2 |
| Cuora amboinensis | 40.5 | 59.5 | 3239 | 1374 | 3022 | 3744 | 38.2 |
| Cuora flavomarginata | 39.5 | 60.5 | 3128 | 1359 | 3133 | 3735 | 19.1 |
| Cuora trifasciata | 40.4 | 59.6 | 3195 | 1397 | 3046 | 3721 | 31.8 |
| Cyclemys dentata | 39.0 | 60.9 | 3062 | 1371 | 3145 | 3775 | 14.7 |
| Daboia russellii | 39.1 | 60.9 | 3202 | 1208 | 3200 | 3664 | 15.0 |
| Gavialis gangeticus | 42.8 | 57.2 | 3415 | 1441 | 2980 | 3514 | 28.8 |