| Species (N=33) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Apalone ferox | 33.3 | 66.7 | 48 | 7 | 38 | 72 | 26.2 |
| Apalone spinifera | 33.3 | 66.7 | 45 | 10 | 40 | 70 | 25.2 |
| Caretta caretta | 35.8 | 64.2 | 51 | 8 | 38 | 68 | 37.0 |
| Chelodina longicollis | 34.0 | 66.0 | 44 | 11 | 34 | 73 | 37.0 |
| Chelonia mydas | 34.9 | 65.1 | 57 | 8 | 46 | 75 | 75.0 |
| Chelus fimbriata | 30.9 | 69.1 | 38 | 12 | 36 | 76 | 35.8 |
| Chelydra serpentina | 33.9 | 66.1 | 49 | 7 | 43 | 66 | 47.0 |
| Chrysemys picta | 33.9 | 66.1 | 53 | 11 | 50 | 75 | 61.0 |
| Cuora amboinensis | 35.1 | 64.9 | 44 | 15 | 45 | 64 | 38.2 |
| Cuora flavomarginata | 35.7 | 64.3 | 47 | 13 | 44 | 64 | 19.1 |
| Cuora trifasciata | 35.1 | 64.9 | 46 | 13 | 44 | 65 | 31.8 |
| Cyclemys dentata | 32.1 | 67.9 | 43 | 11 | 47 | 67 | 14.7 |
| Indotestudo forstenii | 35.6 | 64.4 | 54 | 8 | 38 | 74 | 32.9 |
| Kinosternon leucostomum | 31.7 | 68.3 | 43 | 14 | 56 | 67 | 19.2 |
| Lissemys punctata | 35.2 | 64.8 | 49 | 9 | 44 | 63 | 17.8 |
| Macrochelys temminckii | 34.5 | 65.5 | 47 | 10 | 43 | 65 | 70.3 |
| Malacochersus tornieri | 36.3 | 63.7 | 50 | 11 | 37 | 70 | 25.9 |
| Manouria emys | 35.1 | 64.9 | 49 | 10 | 43 | 66 | 19.9 |
| Mauremys japonica | 36.3 | 63.7 | 50 | 11 | 41 | 66 | 16.2 |
| Mauremys mutica | 37.5 | 62.5 | 50 | 13 | 41 | 64 | 22.1 |
| Notochelys platynota | 29.1 | 70.9 | 46 | 9 | 60 | 74 | 18.8 |
| Palea steindachneri | 35.8 | 64.2 | 51 | 8 | 39 | 67 | 41.0 |
| Pelomedusa subrufa | 31.0 | 69.0 | 46 | 6 | 52 | 64 | 20.1 |
| Pelusios castaneus | 36.4 | 63.6 | 54 | 6 | 43 | 62 | 41.0 |
| Platemys platycephala | 39.5 | 60.5 | 51 | 13 | 29 | 69 | 20.0 |
| Platysternon megacephalum | 36.3 | 63.7 | 49 | 12 | 40 | 67 | 27.0 |
| Sacalia bealei | 33.9 | 66.1 | 46 | 11 | 42 | 69 | 27.3 |
| Sternotherus carinatus | 32.2 | 67.8 | 49 | 8 | 49 | 71 | 29.3 |
| Testudo graeca | 37.4 | 62.6 | 55 | 10 | 36 | 73 | 127.0 |
| Testudo kleinmanni | 37.7 | 62.3 | 58 | 11 | 35 | 79 | 21.0 |
| Testudo marginata | 38.5 | 61.5 | 55 | 12 | 36 | 71 | 21.2 |
| Trachemys scripta | 32.8 | 67.2 | 50 | 12 | 54 | 73 | 41.3 |
| Trionyx triunguis | 35.8 | 64.2 | 52 | 7 | 37 | 69 | 50.6 |