| Species (N=33) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) |
|---|---|---|---|---|---|---|---|
| Apalone ferox | 39.1 | 60.9 | 100 | 37 | 97 | 116 | 26.2 |
| Apalone spinifera | 38.0 | 62.0 | 99 | 34 | 96 | 121 | 25.2 |
| Caretta caretta | 38.3 | 61.7 | 99 | 35 | 101 | 115 | 37.0 |
| Chelodina longicollis | 35.3 | 64.7 | 83 | 39 | 105 | 119 | 37.0 |
| Chelonia mydas | 40.3 | 59.7 | 105 | 36 | 95 | 114 | 75.0 |
| Chelus fimbriata | 36.1 | 63.9 | 87 | 39 | 108 | 115 | 35.8 |
| Chelydra serpentina | 38.6 | 61.4 | 94 | 41 | 106 | 109 | 47.0 |
| Chrysemys picta | 38.9 | 61.1 | 91 | 45 | 105 | 109 | 61.0 |
| Cuora amboinensis | 37.1 | 62.9 | 92 | 38 | 107 | 113 | 38.2 |
| Cuora flavomarginata | 34.9 | 65.1 | 86 | 37 | 114 | 115 | 19.1 |
| Cuora trifasciata | 37.0 | 63.0 | 91 | 38 | 107 | 113 | 31.8 |
| Cyclemys dentata | 33.8 | 66.2 | 79 | 39 | 121 | 110 | 14.7 |
| Indotestudo forstenii | 39.8 | 60.2 | 101 | 39 | 95 | 117 | 32.9 |
| Kinosternon leucostomum | 35.0 | 65.0 | 88 | 35 | 105 | 123 | 19.2 |
| Lissemys punctata | 40.0 | 60.0 | 105 | 35 | 90 | 120 | 17.8 |
| Macrochelys temminckii | 36.6 | 63.4 | 89 | 39 | 107 | 115 | 70.3 |
| Malacochersus tornieri | 39.8 | 60.2 | 104 | 36 | 107 | 105 | 25.9 |
| Manouria emys | 41.5 | 58.5 | 101 | 45 | 97 | 109 | 19.9 |
| Mauremys japonica | 38.3 | 61.7 | 94 | 40 | 107 | 109 | 16.2 |
| Mauremys mutica | 38.3 | 61.7 | 94 | 40 | 107 | 109 | 22.1 |
| Notochelys platynota | 37.0 | 63.0 | 91 | 38 | 108 | 112 | 18.8 |
| Palea steindachneri | 39.1 | 60.9 | 106 | 31 | 93 | 120 | 41.0 |
| Pelomedusa subrufa | 34.4 | 65.6 | 88 | 33 | 106 | 125 | 20.1 |
| Pelusios castaneus | 43.3 | 56.7 | 101 | 31 | 80 | 93 | 41.0 |
| Platemys platycephala | 38.7 | 61.3 | 96 | 39 | 99 | 115 | 20.0 |
| Platysternon megacephalum | 37.1 | 62.9 | 86 | 44 | 109 | 111 | 27.0 |
| Sacalia bealei | 37.8 | 62.2 | 92 | 40 | 108 | 109 | 27.3 |
| Sternotherus carinatus | 34.8 | 65.2 | 86 | 36 | 107 | 122 | 29.3 |
| Testudo graeca | 38.9 | 61.1 | 90 | 47 | 107 | 108 | 127.0 |
| Testudo kleinmanni | 37.8 | 62.2 | 88 | 45 | 108 | 111 | 21.0 |
| Testudo marginata | 39.2 | 60.8 | 91 | 47 | 108 | 106 | 21.2 |
| Trachemys scripta | 39.4 | 60.6 | 96 | 42 | 100 | 112 | 41.3 |
| Trionyx triunguis | 41.7 | 58.3 | 109 | 37 | 86 | 118 | 50.6 |