Learn English: Ancient Predator Battle: Terror Bird Meets Its Match (hard)

Thirteen million years ago, a colossal terror bird, a top predator, met its demise in a brutal encounter.

Scientists discovered bite marks on the terror bird's fossilized leg bone, indicating a fierce struggle.

The unique tooth marks were meticulously analyzed and matched to an extinct caiman, a sizable reptile.

This remarkable finding unveils a previously unknown vulnerability for these massive terror birds.