Before man ruled the world, Earth was a land of giants, from birds with plane-length wingspans to Boeing 737- sized dinosaurs. Count down the biggest beasts in this spectacular special.
Production companies：
Blink Films
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National Geographic
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Splice Post
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Overview：Before man ruled the world, Earth was a land of giants, from birds with plane-length wingspans to Boeing 737- sized dinosaurs. Count down the biggest beasts in this spectacular special.
