| Species (N=33) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Apalone ferox | 37.5 | 62.5 | 164 | 34 | 73 | 257 | 26.2 |
| Apalone spinifera | 38.4 | 61.6 | 170 | 33 | 69 | 256 | 25.2 |
| Caretta caretta | 38.3 | 61.7 | 162 | 39 | 81 | 243 | 37.0 |
| Chelodina longicollis | 35.2 | 64.8 | 143 | 43 | 86 | 256 | 37.0 |
| Chelonia mydas | 38.1 | 61.9 | 164 | 36 | 81 | 244 | 75.0 |
| Chelus fimbriata | 38.9 | 61.1 | 163 | 41 | 72 | 249 | 35.8 |
| Chelydra serpentina | 37.5 | 62.5 | 152 | 45 | 84 | 244 | 47.0 |
| Chrysemys picta | 40.8 | 59.2 | 171 | 43 | 74 | 237 | 61.0 |
| Cuora amboinensis | 37.7 | 62.3 | 156 | 42 | 79 | 248 | 38.2 |
| Cuora flavomarginata | 39.6 | 60.4 | 165 | 43 | 73 | 244 | 19.1 |
| Cuora trifasciata | 39.6 | 60.4 | 162 | 46 | 73 | 244 | 31.8 |
| Cyclemys dentata | 38.3 | 61.7 | 159 | 42 | 79 | 245 | 14.7 |
| Indotestudo forstenii | 38.1 | 61.9 | 166 | 34 | 71 | 254 | 32.9 |
| Kinosternon leucostomum | 29.9 | 70.1 | 130 | 27 | 108 | 260 | 19.2 |
| Lissemys punctata | 36.6 | 63.4 | 156 | 36 | 76 | 257 | 17.8 |
| Macrochelys temminckii | 38.8 | 61.2 | 163 | 43 | 71 | 254 | 70.3 |
| Malacochersus tornieri | 37.1 | 62.9 | 156 | 39 | 72 | 258 | 25.9 |
| Manouria emys | 39.6 | 60.4 | 163 | 45 | 76 | 241 | 19.9 |
| Mauremys japonica | 39.0 | 61.0 | 157 | 48 | 86 | 234 | 16.2 |
| Mauremys mutica | 38.7 | 61.3 | 161 | 42 | 75 | 247 | 22.1 |
| Notochelys platynota | 37.9 | 62.1 | 159 | 39 | 75 | 249 | 18.8 |
| Palea steindachneri | 38.1 | 61.9 | 164 | 37 | 75 | 252 | 41.0 |
| Pelomedusa subrufa | 41.4 | 58.6 | 176 | 40 | 79 | 227 | 20.1 |
| Pelusios castaneus | 44.6 | 55.4 | 179 | 46 | 75 | 204 | 41.0 |
| Platemys platycephala | 38.1 | 61.9 | 164 | 37 | 69 | 258 | 20.0 |
| Platysternon megacephalum | 39.6 | 60.4 | 164 | 44 | 81 | 236 | 27.0 |
| Sacalia bealei | 37.1 | 62.9 | 150 | 45 | 80 | 250 | 27.3 |
| Sternotherus carinatus | 33.7 | 66.3 | 149 | 28 | 90 | 258 | 29.3 |
| Testudo graeca | 37.5 | 62.5 | 158 | 39 | 76 | 252 | 127.0 |
| Testudo kleinmanni | 37.7 | 62.3 | 151 | 47 | 78 | 249 | 21.0 |
| Testudo marginata | 39.0 | 61.0 | 162 | 43 | 68 | 252 | 21.2 |
| Trachemys scripta | 39.4 | 60.6 | 165 | 42 | 77 | 241 | 41.3 |
| Trionyx triunguis | 41.1 | 58.9 | 184 | 32 | 52 | 257 | 50.6 |