Why did the Tyrannosaurus rex have such small arms?

Paleontologists finally explain the disproportionate morphology of the Tyrannosaurus, whose tiny arms contrasted with its giant body.

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The fact

This evolutionary adaptation resulted from energetic and functional constraints related to bipedal locomotion and prey capture.

Discoveries shed new light on survival strategies of large Cretaceous predators.

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Auto-synthesis from 1 media source · identified on May 22, 2026