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Rare Edmontosaurus Skull Reveals T. rex Hunting Behavior

3/25/2026

Summary

Story summary

Paleontologists in Montana's Hell Creek Formation have uncovered a rare Edmontosaurus skull fossil with a Tyrannosaurus rex tooth embedded.
The tooth's position and lack of healing indicate a violent encounter, suggesting Edmontosaurus was killed by Tyrannosaurus rex.
The skull shows multiple bite marks, consistent with feeding behavior observed in modern carnivores.
The find informs understanding of Tyrannosaurus rex behavior and does not resolve whether it was a hunter or scavenger.

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Story summary

Paleontologists in Montana's Hell Creek Formation have uncovered a rare Edmontosaurus skull fossil with a Tyrannosaurus rex tooth embedded.
The tooth's position and lack of healing indicate a violent encounter, suggesting Edmontosaurus was killed by Tyrannosaurus rex.
The skull shows multiple bite marks, consistent with feeding behavior observed in modern carnivores.
The find informs understanding of Tyrannosaurus rex behavior and does not resolve whether it was a hunter or scavenger.