Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Alopias pelagicus, 41.3, 58.7, 205, 120, 234, 227, 29.0, Alopias superciliosus, 41.7, 58.3, 207, 121, 233, 225, 21.0, Carcharias taurus, 40.8, 59.2, 203, 118, 238, 227, 12.0, Carcharodon carcharias, 43.1, 56.9, 214, 125, 227, 220, 50.0, Cetorhinus maximus, 43.1, 56.9, 215, 124, 231, 216, 32.0, Lamna ditropis, 44.4, 55.6, 220, 129, 227, 210, 20.0,