Cretaceous
Kosmoceratops
Kosmoceratops richardsoni
The catalogue presents Kosmoceratops as a herbivore member of Ceratopsidae that lived during the Cretaceous, between 76 Ma. Its estimated range is 4.5 m in length and 1.2 t in mass, giving a practical sense of scale. Reference material comes from Utah, USA. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Kosmoceratops, the PBDB records the taxonomic attribution as Sampson et al. (2010).
The PBDB places it in Chasmosaurinae, and the catalogue record assigns it to the family Ceratopsidae.
- PBDB · taxon.parent
- Ceratopsidae
In the PBDB record, the reported stratigraphic range is the Campanian.
The PBDB catalogues 2 occurrences, with material from the Kaiparowits Formation (2). Provenance: United States.
The catalogue records the holotype as UMNH VP 17000 and the type locality as “Utah, USA”.
- UMNH VP 17000
- Utah, USA
The catalogue's reference measurements are 4.5 m in length and 1.2 t in mass — estimates, which vary with specimen and method.
- 4.5 m
- 1.2 tons
The record gathers 3 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
- 4.5 m
- Weight
- 1.2 t
- Period
- Cretaceous
- Time range
- 76 Ma
Discovery Information
- First Discovery
- 2010
- Described by
- Scott Sampson
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Ornithischia
- Family
- Ceratopsidae
- Genus
- Kosmoceratops
- Species
- K. richardsoni
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
- UMNH VP 17000
- Type locality
- Utah, USA