Cretaceous
Acrocanthosaurus
Acrocanthosaurus atokensis
The catalogue presents Acrocanthosaurus as a carnivore member of Carcharodontosauridae that lived during the Cretaceous, between 113.0–100.5 Ma. Its estimated range is 11.0–12.0 m in length and 4.4–6.6 t in mass, giving a practical sense of scale. Reference material comes from Antlers Formation, Oklahoma, USA. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Acrocanthosaurus, the PBDB records the taxonomic attribution as Stovall and Langston (1950).
The PBDB places it in Carcharodontosauridae, and the catalogue record assigns it to the family Carcharodontosauridae.
- PBDB · taxon.parent
- Carcharodontosauridae
In the PBDB record, the reported stratigraphic range runs from the Aptian to the Cenomanian.
The PBDB catalogues 9 occurrences, with material from the Antlers Formation (3), from the Cloverly Formation (3) and from the Twin Mountains Formation (1). Provenance: United States.
The catalogue records the holotype as OMNH 10146 and the type locality as “Antlers Formation, Oklahoma, USA”.
- OMNH 10146
- Antlers Formation, Oklahoma, USA
The catalogue's reference measurements are 11.0–12.0 m in length and 4.4–6.6 t in mass — estimates, which vary with specimen and method.
- 11.0-12.0 m
- 4.4-6.6 tons
The record gathers 59 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
- 11.0–12.0 m
- Weight
- 4.4–6.6 t
- Period
- Cretaceous
- Time range
- 113.0–100.5 Ma
Discovery Information
- First Discovery
- 1950
- Described by
- J. Willis Stovall
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Saurischia
- Family
- Carcharodontosauridae
- Genus
- Acrocanthosaurus
- Species
- A. atokensis
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
- OMNH 10146
- Type locality
- Antlers Formation, Oklahoma, USA