Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Alopias pelagicus, 38.4, 61.6, 300, 100, 312, 331, 29.0, Alopias superciliosus, 41.3, 58.7, 327, 104, 289, 323, 21.0,