Jurassic
Dilophosaurus
Dilophosaurus wetherilli
The catalogue presents Dilophosaurus as a carnivore member of Dilophosauridae that lived during the Jurassic, between 196.5–183.0 Ma. Its estimated range is 6.0–7.0 m in length and 300–500 kg in mass, giving a practical sense of scale. Reference material comes from Kayenta Formation, Arizona, USA. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Dilophosaurus, the PBDB records the taxonomic attribution as Welles (1970).
The PBDB places it in Neotheropoda, and the catalogue record assigns it to the family Dilophosauridae.
- PBDB · taxon.parent
- Dilophosauridae
In the PBDB record, the reported stratigraphic range runs from the Hettangian to the Pliensbachian.
The PBDB catalogues 10 occurrences, with material from the Kayenta Formation (10). Provenance: United States.
The catalogue records the holotype as UCMP 37302 and the type locality as “Kayenta Formation, Arizona, USA”.
- UCMP 37302
- Kayenta Formation, Arizona, USA
The catalogue's reference measurements are 6.0–7.0 m in length and 300–500 kg in mass — estimates, which vary with specimen and method.
- 6.0-7.0 m
- 300-500 kg
The record gathers 42 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
- 6.0–7.0 m
- Weight
- 300–500 kg
- Period
- Jurassic
- Time range
- 196.5–183.0 Ma
Discovery Information
- First Discovery
- 1954
- Described by
- Jesse Williams
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Saurischia
- Family
- Dilophosauridae
- Genus
- Dilophosaurus
- Species
- D. wetherilli
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
- UCMP 37302
- Type locality
- Kayenta Formation, Arizona, USA