Cretaceous
Euoplocephalus
Euoplocephalus tutus
The catalogue presents Euoplocephalus as a herbivore member of Ankylosauridae that lived during the Cretaceous, between 76.5–75.5 Ma. Its estimated range is 5.5–7.0 m in length and 2.0–2.5 t in mass, giving a practical sense of scale. Reference material comes from Dinosaur Park Formation, Alberta, Canada. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Euoplocephalus, the PBDB records the taxonomic attribution as Lambe (1910).
The PBDB places it in Euoplocephalini, and the catalogue record assigns it to the family Ankylosauridae.
- PBDB · taxon.parent
- Ankylosauridae
In the PBDB record, the reported stratigraphic range runs from the Campanian to the Maastrichtian.
The PBDB catalogues 6 occurrences, with material from the Dinosaur Park Formation (5) and from the Bearpaw Shale Formation (1). Provenance: Canada.
The catalogue records the holotype as NMC 0210 and the type locality as “Dinosaur Park Formation, Alberta, Canada”.
- NMC 0210
- Dinosaur Park Formation, Alberta, Canada
The catalogue's reference measurements are 5.5–7.0 m in length and 2.0–2.5 t in mass — estimates, which vary with specimen and method.
- 5.5-7.0 m
- 2.0-2.5 tons
The record gathers 74 bibliographic references registered in the PBDB, listed below.
Where it lived
Fossil occurrences on today’s map and in the tectonic reconstruction.
Positions reconstructed by PBDB/GPlates, not observed; this is not an exact habitat map.
Artistic 3D reconstruction
There is no approved species-specific 3D model yet. Generic anatomy will not be presented as if it were evidence.
Physical Specifications
- Length
- 5.5–7.0 m
- Weight
- 2.0–2.5 t
- Period
- Cretaceous
- Time range
- 76.5–75.5 Ma
Discovery Information
- First Discovery
- 1902
- Described by
- Lawrence Lambe
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Ornithischia
- Family
- Ankylosauridae
- Genus
- Euoplocephalus
- Species
- E. tutus
Data status
Taxonomic name matched to PBDB and checked on 2026-08-08.
Taxonomic linkage does not automatically validate size, mass, behaviour or appearance.
- Type specimen
- NMC 0210
- Type locality
- Dinosaur Park Formation, Alberta, Canada