Cretaceous
Therizinosaurus
Therizinosaurus cheloniformis
The catalogue presents Therizinosaurus as a herbivore member of Therizinosauridae that lived during the Cretaceous, between 70.6–66.0 Ma. Its estimated range is 12.0–16.0 m in length and 3.0–5.0 t in mass, giving a practical sense of scale. Reference material comes from Nemegt Formation, Mongolia. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Therizinosaurus, the PBDB records the taxonomic attribution as Maleev (1954).
The PBDB places it in Therizinosauridae, and the catalogue record assigns it to the family Therizinosauridae.
- PBDB · taxon.parent
- Therizinosauridae
In the PBDB record, the reported stratigraphic range is the Maastrichtian.
The PBDB catalogues 2 occurrences, with material from the Nemegt Formation (2). Provenance: Mongolia.
The catalogue records the holotype as PIN 551-483 and the type locality as “Nemegt Formation, Mongolia”.
- PIN 551-483
- Nemegt Formation, Mongolia
The catalogue's reference measurements are 12.0–16.0 m in length and 3.0–5.0 t in mass — estimates, which vary with specimen and method.
- 12.0-16.0 m
- 3.0-5.0 tons
The record gathers 22 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
- 12.0–16.0 m
- Weight
- 3.0–5.0 t
- Period
- Cretaceous
- Time range
- 70.6–66.0 Ma
Discovery Information
- First Discovery
- 1954
- Described by
- Evgeny Maleev
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Saurischia
- Family
- Therizinosauridae
- Genus
- Therizinosaurus
- Species
- T. cheloniformis
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
- PIN 551-483
- Type locality
- Nemegt Formation, Mongolia