A newfound dinosaur had tiny arms before T. rex made them cool
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A predecessor to Tyrannosaurus rex, Meraxes gigas had a giant head and puny but muscular arms, suggesting the limbs served some purpose.
A newfound dinosaur evolved a giant head and tiny arms independently of T. rex, suggesting the scrawny forelimbs had a purpose. Meraxes gigas went extinct 20 million years before T. rex walked
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