Dinosauria›Ornithischia
Pachycephalosaurus Pachycephalosaurus wyomingensis (Gilmore 1931)
/ˌpækɪˌsɛfələˈsɔːrəs/
Late Cretaceous (Maastrichtian) · 83.6–66 Mya
Key Statistics
Diet
herbivore
Locomotion
bipedal
inferred from clade
Habitat
ground-dwelling
Social
herding
Where It Was Found
Countries
United States, Canada
Regions
Wyoming · Montana · Colorado · Alberta
Formations
Lance · Hell Creek · Denver · Dinosaur Park
Dig sites
7
distinct collections
Overview
Pachycephalosaurus wyomingensis is a pachycephalosaur dinosaur known from the Late Cretaceous, roughly 83.6–66.0 million years ago. It was a herbivore. It is recorded as ground-dwelling and herding. Fossils have been recovered from Wyoming, United States and elsewhere. It was named by (Gilmore 1931). The species is represented by 26 recorded occurrences in the Paleobiology Database.
Fossil Record Completeness
How much of this profile is grounded in the fossil record
~65%
well attested
Based on 26 recorded occurrences in the Paleobiology Database.
Geologic Time
Where Pachycephalosaurus wyomingensis sits in deep time
Pachycephalosaurus
252 Mya201 Mya145 Mya66 Mya
Relationships
Part of a wider fossil web
These species share Pachycephalosaurus wyomingensis's place in deep time — computed from overlapping age ranges, shared clades, and inferred ecology. Predator–prey pairs additionally have to have been dug up in the same place.