Cretaceous
Oryctodromeus
Oryctodromeus cubicularis
The catalogue presents Oryctodromeus as a herbivore member of Parksosauridae that lived during the Cretaceous, between 95 Ma. Its estimated range is 2.1 m in length and 22 kg in mass, giving a practical sense of scale. Reference material comes from Montana, USA. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Oryctodromeus, the PBDB records the taxonomic attribution as Varricchio et al. (2007).
The PBDB places it in Orodrominae, and the catalogue record assigns it to the family Parksosauridae.
- PBDB · taxon.parent
- Parksosauridae
In the PBDB record, the reported stratigraphic range runs from the Albian to the Cenomanian.
The PBDB catalogues 1 occurrence, with material from the Blackleaf Formation (1). Provenance: United States.
The catalogue records the holotype as MOR 1636 and the type locality as “Montana, USA”.
- MOR 1636
- Montana, USA
The catalogue's reference measurements are 2.1 m in length and 22 kg in mass — estimates, which vary with specimen and method.
- 2.1 m
- 22 kg
The record gathers 8 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
- 2.1 m
- Weight
- 22 kg
- Period
- Cretaceous
- Time range
- 95 Ma
Discovery Information
- First Discovery
- 2007
- Described by
- David Varricchio
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Ornithischia
- Family
- Parksosauridae
- Genus
- Oryctodromeus
- Species
- O. cubicularis
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
- MOR 1636
- Type locality
- Montana, USA