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Titanosaurs were the biggest land animals Earth’s ever seen − these plant-powered dinos combined reptile and mammal traits
A replica fossil of the titanosaur _Patagotitan_, one of the largest dinosaurs ever discovered. It would have weighed about 70 tons (63.5 metric tons.) Spencer Platt/Getty Images News via Getty Images ...
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Why were dinosaurs so big? The secrets of titanosaurs' super size
Elephants' large ears perform the same task. Could land animals evolve to ginormous sizes again in the future? Well, perhaps. But it's not likely they'd be as big as titanosaurs or other sauropods.