Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Callosciurus erythraeus, 38.1, 61.9, 162, 38, 110, 215, 17.0, Cynomys ludovicianus, 36.2, 63.8, 154, 36, 122, 213, 11.0, Ictidomys tridecemlineatus, 34.7, 65.3, 145, 37, 133, 210, 7.9, Petaurista alborufus, 37.1, 62.9, 161, 34, 113, 217, 21.4, Pteromys volans, 33.7, 66.3, 143, 34, 130, 218, 11.4, Ratufa bicolor, 37.9, 62.1, 163, 36, 119, 207, 19.0, Sciurus vulgaris, 34.7, 65.3, 149, 33, 126, 217, 14.8, Tamias sibiricus, 34.5, 65.5, 144, 37, 118, 226, 9.6,