Cretaceous
Sonorasaurus
Sonorasaurus thompsoni
The catalogue presents Sonorasaurus as a herbivore member of Brachiosauridae that lived during the Cretaceous, between 100.5–93.9 Ma. Its estimated range is 15.0 m in length and 15.0–20.0 t in mass, giving a practical sense of scale. Reference material comes from Turney Ranch Formation, Arizona, USA. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Sonorasaurus, the PBDB records the taxonomic attribution as Ratkevich (1998).
The PBDB places it in Brachiosauridae, and the catalogue record assigns it to the family Brachiosauridae.
- PBDB · taxon.parent
- Brachiosauridae
In the PBDB record, the reported stratigraphic range runs from the Albian to the Cenomanian.
The PBDB catalogues 1 occurrence, with material from the Turney Ranch Formation (1). Provenance: United States.
The catalogue records the type locality as “Turney Ranch Formation, Arizona, USA”.
- Turney Ranch Formation, Arizona, USA
The catalogue's reference measurements are 15.0 m in length and 15.0–20.0 t in mass — estimates, which vary with specimen and method.
- 15.0 m
- 15.0-20.0 tons
The record gathers 14 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
- 15.0 m
- Weight
- 15.0–20.0 t
- Period
- Cretaceous
- Time range
- 100.5–93.9 Ma
Discovery Information
- First Discovery
- 1998
- Described by
- Ratkevich
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Saurischia
- Family
- Brachiosauridae
- Genus
- Sonorasaurus
- Species
- S. thompsoni
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
- not documented in this catalogue
- Type locality
- Turney Ranch Formation, Arizona, USA