Cretaceous
Bistahieversor
Bistahieversor sealeyi
The catalogue presents Bistahieversor as a carnivore member of Tyrannosauridae that lived during the Cretaceous, between 74 Ma. Its estimated range is 9.0 m in length and 2.5 t in mass, giving a practical sense of scale. Reference material comes from New Mexico, USA. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Bistahieversor, the PBDB records the taxonomic attribution as Carr and Williamson (2010).
The PBDB places it in Teratophoneini, and the catalogue record assigns it to the family Tyrannosauridae.
- PBDB · taxon.parent
- Tyrannosauridae
In the PBDB record, the reported stratigraphic range is the Campanian.
The PBDB catalogues 4 occurrences, with material from the Fruitland Formation (2) and from the Kirtland Formation (2). Provenance: United States.
The catalogue records the holotype as NMMNH P-25049 and the type locality as “New Mexico, USA”.
- NMMNH P-25049
- New Mexico, USA
The catalogue's reference measurements are 9.0 m in length and 2.5 t in mass — estimates, which vary with specimen and method.
- 9.0 m
- 2.5 tons
The record gathers 7 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
- 9.0 m
- Weight
- 2.5 t
- Period
- Cretaceous
- Time range
- 74 Ma
Discovery Information
- First Discovery
- 2010
- Described by
- Thomas Carr & Thomas Williamson
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Saurischia
- Family
- Tyrannosauridae
- Genus
- Bistahieversor
- Species
- B. sealeyi
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
- NMMNH P-25049
- Type locality
- New Mexico, USA