Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Alopias pelagicus, 38.6, 61.4, 4230, 2218, 4890, 5354, 29.0, Alopias superciliosus, 39.3, 60.7, 4307, 2262, 4837, 5313, 21.0,