Dinosauria › Ornithischia › Ceratopsia › Ceratopsidae
Achelousaurus
Achelousaurus horneri Sampson 1994
Late Cretaceous (Campanian) · 83.6–72.2 Mya
Key Statistics
Diet
herbivore
Locomotion
quadrupedal
inferred from clade
Overview
Achelousaurus horneri is a ceratopsian dinosaur known from the Late Cretaceous, roughly 83.6–72.2 million years ago. It was a herbivore. It was named by Sampson 1994. The species is represented by 2 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~8%
fragmentary record
Confirmed
Inferred
Based on 2 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Achelousaurus sits in deep time
Achelousaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Achelousaurus's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology.