Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Carcharodon carcharias, 38.4, 61.6, 81, 33, 105, 78, 50.0, Lamna ditropis, 40.7, 59.3, 85, 36, 100, 76, 20.0,