Species, GC (%), AT (%), G (bases), C (bases), A (bases), T (bases), Maximum lifespan (yrs) Casuarius casuarius, 45.8, 54.2, 314, 131, 256, 271, 30.0, Dromaius novaehollandiae, 44.0, 56.0, 303, 125, 268, 276, 16.6,