| Species (N=93) | GC (%) | AT (%) | G (bases) | C (bases) | A (bases) | T (bases) | Maximum lifespan (yrs) | 
|---|---|---|---|---|---|---|---|
| Agkistrodon piscivorus | 40.6 | 59.4 | 54 | 13 | 32 | 66 | 24.5 | 
| Alligator mississippiensis | 41.4 | 58.6 | 54 | 13 | 39 | 56 | 73.1 | 
| Alligator sinensis | 47.0 | 53.0 | 69 | 17 | 39 | 58 | 60.7 | 
| Anguis fragilis | 40.5 | 59.5 | 52 | 16 | 43 | 57 | 54.0 | 
| Anolis carolinensis | 38.7 | 61.3 | 51 | 14 | 44 | 59 | 7.2 | 
| Apalone ferox | 33.3 | 66.7 | 48 | 7 | 38 | 72 | 26.2 | 
| Apalone spinifera | 33.3 | 66.7 | 45 | 10 | 40 | 70 | 25.2 | 
| Basiliscus vittatus | 35.7 | 64.3 | 47 | 13 | 41 | 67 | 9.1 | 
| Blanus cinereus | 41.8 | 58.2 | 50 | 19 | 41 | 55 | 16.0 | 
| Boa constrictor | 26.8 | 73.2 | 29 | 16 | 40 | 83 | 40.4 | 
| Bungarus fasciatus | 27.9 | 72.1 | 39 | 7 | 43 | 76 | 13.2 | 
| Bungarus multicinctus | 27.7 | 72.3 | 36 | 8 | 51 | 64 | 13.7 | 
| Caiman crocodilus | 40.8 | 59.2 | 59 | 10 | 40 | 60 | 24.1 | 
| Calotes versicolor | 39.5 | 60.5 | 48 | 16 | 40 | 58 | 5.0 | 
| Caretta caretta | 35.8 | 64.2 | 51 | 8 | 38 | 68 | 37.0 | 
| Chamaeleo chamaeleon | 29.7 | 70.3 | 41 | 8 | 38 | 78 | 3.6 | 
| Chamaeleo dilepis | 29.6 | 70.4 | 36 | 12 | 39 | 75 | 4.0 | 
| 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 | 
| Chlamydosaurus kingii | 35.9 | 64.1 | 48 | 8 | 37 | 63 | 9.9 | 
| Chrysemys picta | 33.9 | 66.1 | 53 | 11 | 50 | 75 | 61.0 | 
| Coleonyx variegatus | 40.7 | 59.3 | 50 | 16 | 31 | 65 | 15.2 | 
| Crocodylus acutus | 34.0 | 66.0 | 42 | 13 | 40 | 67 | 32.9 | 
| Crocodylus intermedius | 32.7 | 67.3 | 42 | 11 | 40 | 69 | 21.8 | 
| Crocodylus moreletii | 34.0 | 66.0 | 41 | 14 | 41 | 66 | 25.4 | 
| Crocodylus niloticus | 35.2 | 64.8 | 43 | 14 | 39 | 66 | 43.8 | 
| Crocodylus novaeguineae | 37.0 | 63.0 | 48 | 12 | 35 | 67 | 24.6 | 
| Crocodylus palustris | 37.7 | 62.3 | 43 | 18 | 40 | 61 | 31.5 | 
| Crocodylus porosus | 39.5 | 60.5 | 48 | 16 | 38 | 60 | 41.7 | 
| Crocodylus rhombifer | 32.1 | 67.9 | 39 | 13 | 43 | 67 | 38.2 | 
| Crocodylus siamensis | 38.9 | 61.1 | 48 | 15 | 38 | 61 | 21.9 | 
| Crotalus horridus | 36.4 | 63.6 | 51 | 9 | 34 | 71 | 30.2 | 
| 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 | 
| Daboia russellii | 30.9 | 69.1 | 41 | 10 | 51 | 63 | 15.0 | 
| Gavialis gangeticus | 38.3 | 61.7 | 51 | 11 | 44 | 56 | 28.8 |