Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Agkistrodon piscivorus, 44.0, 56.0, 225, 120, 197, 242, 24.5, Alligator mississippiensis, 46.2, 53.8, 247, 115, 208, 214, 73.1, Alligator sinensis, 48.9, 51.1, 257, 126, 201, 200, 60.7, Anguis fragilis, 48.4, 51.6, 244, 136, 195, 210, 54.0, Anolis carolinensis, 43.0, 57.0, 197, 140, 230, 217, 7.2, Apalone ferox, 42.7, 57.3, 220, 115, 198, 251, 26.2, Apalone spinifera, 43.4, 56.6, 223, 117, 196, 248, 25.2, Basiliscus vittatus, 44.1, 55.9, 220, 126, 211, 227, 9.1, Blanus cinereus, 45.7, 54.3, 235, 123, 207, 219, 16.0, Boa constrictor, 46.4, 53.6, 208, 156, 193, 227, 40.4, Bungarus fasciatus, 38.3, 61.7, 192, 108, 242, 242, 13.2, Bungarus multicinctus, 41.2, 58.8, 211, 112, 223, 238, 13.7, Caiman crocodilus, 47.1, 52.9, 259, 110, 196, 219, 24.1, Calotes versicolor, 43.6, 56.4, 227, 115, 221, 221, 5.0, Caretta caretta, 41.8, 58.2, 215, 113, 208, 248, 37.0, Chamaeleo chamaeleon, 37.4, 62.6, 185, 108, 229, 262, 3.6, Chamaeleo dilepis, 37.6, 62.4, 188, 107, 230, 259, 4.0, Chelodina longicollis, 40.3, 59.7, 203, 113, 214, 254, 37.0, Chelonia mydas, 42.9, 57.1, 225, 111, 201, 247, 75.0, Chelus fimbriata, 40.2, 59.8, 205, 110, 211, 258, 35.8, Chelydra serpentina, 42.0, 58.0, 213, 117, 220, 235, 47.0, Chlamydosaurus kingii, 43.5, 56.5, 236, 105, 191, 252, 9.9, Chrysemys picta, 41.8, 58.2, 211, 117, 221, 235, 61.0, Coleonyx variegatus, 45.0, 55.0, 237, 116, 197, 234, 15.2, Crocodylus acutus, 45.4, 54.6, 227, 129, 213, 215, 32.9, Crocodylus intermedius, 44.9, 55.1, 225, 127, 215, 217, 21.8, Crocodylus moreletii, 45.8, 54.2, 237, 122, 206, 219, 25.4, Crocodylus niloticus, 46.0, 54.0, 234, 127, 207, 216, 43.8, Crocodylus novaeguineae, 45.3, 54.7, 234, 121, 204, 225, 24.6, Crocodylus palustris, 45.9, 54.1, 236, 124, 201, 223, 31.5, Crocodylus porosus, 46.3, 53.7, 235, 128, 202, 219, 41.7, Crocodylus rhombifer, 45.7, 54.3, 231, 127, 211, 215, 38.2, Crocodylus siamensis, 45.9, 54.1, 232, 128, 205, 219, 21.9, Crotalus horridus, 43.7, 56.3, 224, 118, 197, 243, 30.2, Cuora amboinensis, 42.2, 57.8, 211, 120, 216, 237, 38.2, Cuora flavomarginata, 40.4, 59.6, 199, 118, 229, 238, 19.1, Cuora trifasciata, 40.9, 59.1, 204, 117, 221, 242, 31.8, Cyclemys dentata, 41.7, 58.3, 209, 118, 218, 239, 14.7, Daboia russellii, 40.1, 59.9, 201, 113, 232, 238, 15.0, Gavialis gangeticus, 45.0, 55.0, 234, 119, 206, 225, 28.8, Gekko gecko, 43.2, 56.8, 225, 114, 230, 215, 23.5, Heloderma suspectum, 39.2, 60.8, 192, 115, 243, 234, 28.9, Hemitheconyx caudicinctus, 49.2, 50.8, 257, 129, 188, 210, 16.2, Heteronotia binoei, 45.7, 54.3, 241, 117, 201, 225, 13.6, Hydrosaurus amboinensis, 44.6, 55.4, 242, 108, 194, 240, 24.4, Hypsiglena torquata, 41.8, 58.2, 206, 122, 202, 254, 12.2, Iguana iguana, 48.0, 52.0, 251, 126, 191, 218, 19.8, Indotestudo forstenii, 41.6, 58.4, 206, 120, 214, 244, 32.9, Kinosternon leucostomum, 39.2, 60.8, 197, 110, 228, 249, 19.2, Lacerta viridis, 42.1, 57.9, 208, 122, 222, 232, 10.0, Lepidophyma flavimaculatum, 48.0, 52.0, 237, 139, 201, 207, 11.0, Lissemys punctata, 42.3, 57.7, 222, 110, 208, 244, 17.8, Macrochelys temminckii, 41.2, 58.8, 199, 113, 216, 229, 70.3, Malacochersus tornieri, 42.2, 57.8, 220, 111, 204, 249, 25.9, Manouria emys, 44.1, 55.9, 219, 127, 209, 229, 19.9, Mauremys japonica, 41.6, 58.4, 208, 118, 217, 241, 16.2, Mauremys mutica, 42.8, 57.2, 215, 121, 212, 237, 22.1, Mecistops cataphractus, 44.8, 55.2, 221, 130, 207, 226, 56.1, Micrurus fulvius, 45.3, 54.7, 227, 128, 207, 222, 19.0, Naja atra, 45.0, 55.0, 225, 128, 206, 225, 11.7, Naja naja, 45.5, 54.5, 225, 132, 206, 221, 32.3, Nerodia sipedon, 45.2, 54.8, 227, 127, 185, 245, 9.6, Notochelys platynota, 40.9, 59.1, 206, 115, 225, 238, 18.8, Ophiophagus hannah, 44.9, 55.1, 237, 115, 193, 239, 22.5, Osteolaemus tetraspis, 44.4, 55.6, 222, 126, 208, 228, 70.0, Ovophis okinavensis, 44.0, 56.0, 223, 122, 206, 233, 19.0, Palea steindachneri, 43.3, 56.7, 222, 116, 201, 242, 41.0, Paleosuchus palpebrosus, 49.9, 50.1, 280, 111, 187, 206, 24.1, Paleosuchus trigonatus, 50.3, 49.7, 277, 117, 191, 199, 30.9, Pelomedusa subrufa, 40.1, 59.9, 215, 99, 229, 241, 20.1, Pelusios castaneus, 42.3, 57.7, 233, 99, 221, 232, 41.0, Phelsuma guimbeaui, 43.2, 56.8, 221, 118, 217, 228, 7.1, Platemys platycephala, 41.9, 58.1, 219, 110, 202, 254, 20.0, Platysternon megacephalum, 43.5, 56.5, 211, 130, 219, 224, 27.0, Podarcis muralis, 41.6, 58.4, 204, 122, 231, 227, 10.0, Pogona vitticeps, 42.5, 57.5, 220, 113, 209, 242, 12.0, Python molurus, 46.9, 53.1, 244, 124, 189, 227, 34.2, Python regius, 45.7, 54.3, 232, 126, 201, 225, 47.5, Sacalia bealei, 42.1, 57.9, 210, 120, 215, 239, 27.3, Sphenodon punctatus, 41.8, 58.2, 199, 129, 237, 219, 90.0, Sternotherus carinatus, 40.7, 59.3, 209, 110, 214, 251, 29.3, Tarentola mauritanica, 46.4, 53.6, 230, 134, 202, 218, 14.0, Testudo graeca, 42.2, 57.8, 209, 122, 212, 241, 127.0, Testudo kleinmanni, 41.7, 58.3, 211, 116, 211, 246, 21.0, Testudo marginata, 41.7, 58.3, 209, 118, 213, 244, 21.2, Tomistoma schlegelii, 46.4, 53.6, 240, 124, 198, 222, 24.7, Trachemys scripta, 42.2, 57.8, 216, 115, 214, 239, 41.3, Trimeresurus albolabris, 42.3, 57.7, 210, 122, 211, 241, 11.4, Trionyx triunguis, 46.7, 53.3, 240, 126, 187, 231, 50.6, Tropidophis haetianus, 41.2, 58.8, 210, 113, 212, 249, 15.3, Varanus niloticus, 44.1, 55.9, 241, 105, 208, 230, 14.6, Varanus salvator, 45.7, 53.8, 246, 112, 202, 220, 15.7, Xenopeltis unicolor, 45.0, 55.0, 232, 121, 192, 239, 12.1,