| Species (N=33) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Apalone ferox | 38.4 | 61.6 | 180 | 84 | 170 | 253 | 26.2 |
| Apalone spinifera | 38.6 | 61.4 | 179 | 86 | 172 | 250 | 25.2 |
| Caretta caretta | 37.1 | 62.9 | 170 | 85 | 182 | 250 | 37.0 |
| Chelodina longicollis | 38.4 | 61.6 | 172 | 89 | 176 | 242 | 37.0 |
| Chelonia mydas | 39.2 | 60.8 | 187 | 82 | 167 | 251 | 75.0 |
| Chelus fimbriata | 39.7 | 60.3 | 185 | 86 | 163 | 248 | 35.8 |
| Chelydra serpentina | 34.5 | 65.5 | 149 | 87 | 202 | 246 | 47.0 |
| Chrysemys picta | 38.7 | 61.3 | 175 | 91 | 182 | 239 | 61.0 |
| Cuora amboinensis | 37.8 | 62.2 | 167 | 93 | 189 | 238 | 38.2 |
| Cuora flavomarginata | 36.7 | 63.3 | 162 | 90 | 195 | 240 | 19.1 |
| Cuora trifasciata | 40.2 | 59.8 | 173 | 103 | 183 | 228 | 31.8 |
| Cyclemys dentata | 36.2 | 63.6 | 158 | 91 | 197 | 240 | 14.7 |
| Indotestudo forstenii | 36.7 | 63.3 | 167 | 85 | 187 | 248 | 32.9 |
| Kinosternon leucostomum | 34.7 | 65.3 | 153 | 83 | 198 | 247 | 19.2 |
| Lissemys punctata | 38.1 | 61.9 | 177 | 85 | 176 | 249 | 17.8 |
| Macrochelys temminckii | 36.1 | 63.9 | 158 | 90 | 194 | 245 | 70.3 |
| Malacochersus tornieri | 38.3 | 61.7 | 179 | 84 | 176 | 248 | 25.9 |
| Manouria emys | 38.7 | 61.3 | 172 | 94 | 179 | 242 | 19.9 |
| Mauremys japonica | 38.1 | 61.9 | 177 | 86 | 182 | 245 | 16.2 |
| Mauremys mutica | 38.3 | 61.7 | 173 | 91 | 188 | 238 | 22.1 |
| Notochelys platynota | 35.2 | 64.8 | 150 | 92 | 208 | 237 | 18.8 |
| Palea steindachneri | 37.0 | 63.0 | 173 | 81 | 178 | 255 | 41.0 |
| Pelomedusa subrufa | 37.5 | 62.5 | 176 | 82 | 188 | 242 | 20.1 |
| Pelusios castaneus | 40.6 | 59.4 | 202 | 77 | 177 | 232 | 41.0 |
| Platemys platycephala | 40.6 | 59.4 | 192 | 85 | 163 | 242 | 20.0 |
| Platysternon megacephalum | 39.7 | 60.3 | 173 | 100 | 180 | 234 | 27.0 |
| Sacalia bealei | 36.8 | 63.2 | 160 | 93 | 195 | 239 | 27.3 |
| Sternotherus carinatus | 35.2 | 64.8 | 153 | 87 | 194 | 247 | 29.3 |
| Testudo graeca | 38.0 | 62.0 | 168 | 93 | 185 | 241 | 127.0 |
| Testudo kleinmanni | 38.4 | 61.6 | 177 | 87 | 182 | 241 | 21.0 |
| Testudo marginata | 38.9 | 61.1 | 175 | 92 | 181 | 239 | 21.2 |
| Trachemys scripta | 37.3 | 62.7 | 168 | 88 | 191 | 240 | 41.3 |
| Trionyx triunguis | 41.6 | 58.4 | 198 | 88 | 153 | 248 | 50.6 |