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From T-Rex to Titanosaur - the biggest dinosaurs of all time

When you picture a dinosaur, you might imagine a 13-meter long T. rex or a Titanosaur the size of an <g class="gr_ gr_5 gr-alert gr_spell gr_inline_cards gr_run_anim ContextualSpelling multiReplace" data-gr-id="5" id="5">airplane</g>. But the first dinosaurs would have only come up to your knee. It turns out that sauropods, like Brontosaurus, developed special adaptations that allowed them to tower over the competition.
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