Dinosauria › Ornithischia › Pachycephalosauria › Pachycephalosauridae
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Brontotholus
Brontotholus harmoni Woodruff et al. 2025
Late Cretaceous (Campanian) · 83.6–72.2 Mya
Key Statistics
Diet
herbivore
Locomotion
bipedal
inferred from clade
Overview
Brontotholus harmoni is a pachycephalosaur dinosaur known from the Late Cretaceous, roughly 83.6–72.2 million years ago. It was a herbivore. It was named by Woodruff et al. 2025. The species is represented by 3 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~11%
fragmentary record
Confirmed
Inferred
Based on 3 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Brontotholus sits in deep time
Brontotholus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Brontotholus's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology.