Cretaceous
Avimimus
Avimimus portentosus
The catalogue presents Avimimus as a omnivore member of Avimimidae that lived during the Cretaceous, between 75.0–70.0 Ma. Its estimated range is 1.5 m in length and 10–15 kg in mass, giving a practical sense of scale. Reference material comes from Djadochta Formation, Mongolia. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Avimimus, the PBDB records the taxonomic attribution as Kurzanov (1981).
The PBDB places it in Oviraptorosauria, and the catalogue record assigns it to the family Avimimidae.
- PBDB · taxon.parent
- Avimimidae
In the PBDB record, the reported stratigraphic range runs from the Campanian to the Maastrichtian.
The PBDB catalogues 5 occurrences, with material from the Nemegt Formation (3), from the Baruungoyot Formation (1) and from the Djadokhta Formation (1). Provenance: Mongolia.
The catalogue records the holotype as PIN 3907/1 and the type locality as “Djadochta Formation, Mongolia”.
- PIN 3907/1
- Djadochta Formation, Mongolia
The catalogue's reference measurements are 1.5 m in length and 10–15 kg in mass — estimates, which vary with specimen and method.
- 1.5 m
- 10-15 kg
The record gathers 30 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
- 1.5 m
- Weight
- 10–15 kg
- Period
- Cretaceous
- Time range
- 75.0–70.0 Ma
Discovery Information
- First Discovery
- 1981
- Described by
- Sergei Kurzanov
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Saurischia
- Family
- Avimimidae
- Genus
- Avimimus
- Species
- A. portentosus
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 3907/1
- Type locality
- Djadochta Formation, Mongolia