| Species (N=33) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Apalone ferox | 40.2 | 59.8 | 214 | 61 | 162 | 247 | 26.2 |
| Apalone spinifera | 41.4 | 58.6 | 219 | 64 | 162 | 239 | 25.2 |
| Caretta caretta | 37.7 | 62.3 | 204 | 53 | 186 | 239 | 37.0 |
| Chelodina longicollis | 36.5 | 63.5 | 184 | 67 | 195 | 241 | 37.0 |
| Chelonia mydas | 40.1 | 59.9 | 219 | 55 | 170 | 239 | 75.0 |
| Chelus fimbriata | 38.0 | 62.0 | 189 | 56 | 168 | 232 | 35.8 |
| Chelydra serpentina | 37.1 | 62.9 | 193 | 61 | 190 | 240 | 47.0 |
| Chrysemys picta | 40.8 | 59.2 | 206 | 73 | 181 | 224 | 61.0 |
| Cuora amboinensis | 38.3 | 61.7 | 198 | 64 | 189 | 233 | 38.2 |
| Cuora flavomarginata | 36.7 | 63.3 | 183 | 68 | 203 | 230 | 19.1 |
| Cuora trifasciata | 37.4 | 62.6 | 187 | 69 | 198 | 230 | 31.8 |
| Cyclemys dentata | 37.1 | 62.9 | 181 | 73 | 200 | 230 | 14.7 |
| Indotestudo forstenii | 37.4 | 62.6 | 194 | 62 | 196 | 232 | 32.9 |
| Kinosternon leucostomum | 35.5 | 64.5 | 182 | 61 | 200 | 241 | 19.2 |
| Lissemys punctata | 36.1 | 63.9 | 189 | 58 | 185 | 252 | 17.8 |
| Macrochelys temminckii | 36.8 | 63.2 | 189 | 67 | 195 | 245 | 70.3 |
| Malacochersus tornieri | 37.4 | 62.6 | 199 | 57 | 186 | 242 | 25.9 |
| Manouria emys | 40.7 | 59.3 | 203 | 74 | 183 | 221 | 19.9 |
| Mauremys japonica | 39.0 | 61.0 | 201 | 66 | 180 | 237 | 16.2 |
| Mauremys mutica | 38.5 | 61.5 | 192 | 71 | 192 | 229 | 22.1 |
| Notochelys platynota | 36.7 | 63.3 | 185 | 66 | 203 | 230 | 18.8 |
| Palea steindachneri | 38.5 | 61.5 | 197 | 66 | 180 | 241 | 41.0 |
| Pelomedusa subrufa | 37.1 | 62.9 | 204 | 51 | 207 | 225 | 20.1 |
| Pelusios castaneus | 40.6 | 59.4 | 225 | 55 | 189 | 221 | 41.0 |
| Platemys platycephala | 38.6 | 61.4 | 211 | 54 | 183 | 239 | 20.0 |
| Platysternon megacephalum | 37.3 | 62.7 | 189 | 66 | 196 | 233 | 27.0 |
| Sacalia bealei | 37.6 | 62.4 | 192 | 65 | 193 | 234 | 27.3 |
| Sternotherus carinatus | 35.5 | 64.5 | 185 | 57 | 193 | 246 | 29.3 |
| Testudo graeca | 37.1 | 62.9 | 191 | 63 | 189 | 241 | 127.0 |
| Testudo kleinmanni | 37.4 | 62.6 | 193 | 63 | 189 | 239 | 21.0 |
| Testudo marginata | 36.3 | 63.7 | 188 | 60 | 193 | 243 | 21.2 |
| Trachemys scripta | 38.2 | 61.8 | 191 | 70 | 196 | 227 | 41.3 |
| Trionyx triunguis | 43.0 | 57.0 | 237 | 57 | 150 | 240 | 50.6 |