Cretaceous
Achillobator
Achillobator giganticus
The catalogue presents Achillobator as a carnivore member of Dromaeosauridae that lived during the Cretaceous, between 96.0–89.0 Ma. Its estimated range is 5.0–6.0 m in length and 350–500 kg in mass, giving a practical sense of scale. Reference material comes from Bayan Shireh Formation, Mongolia. Size and mass are approximations and may change with new fossils or methods.
Evidence-backed summary
For Achillobator, the PBDB records the taxonomic attribution as Perle et al. (1999).
The PBDB places it in Eudromaeosauria, and the catalogue record assigns it to the family Dromaeosauridae.
- PBDB · taxon.parent
- Dromaeosauridae
In the PBDB record, the reported stratigraphic range runs from the Cenomanian to the Santonian.
The PBDB catalogues 1 occurrence, with material from the Baynshire Formation (1). Provenance: Mongolia.
The catalogue records the holotype as FR.MNUFR-15 and the type locality as “Bayan Shireh Formation, Mongolia”.
- FR.MNUFR-15
- Bayan Shireh Formation, Mongolia
The catalogue's reference measurements are 5.0–6.0 m in length and 350–500 kg in mass — estimates, which vary with specimen and method.
- 5.0-6.0 m
- 350-500 kg
The record gathers 13 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
- 5.0–6.0 m
- Weight
- 350–500 kg
- Period
- Cretaceous
- Time range
- 96.0–89.0 Ma
Discovery Information
- First Discovery
- 1999
- Described by
- Altangerel Perle
Taxonomic Classification
- Kingdom
- Animalia
- Phylum
- Chordata
- Class
- Reptilia
- Order
- Saurischia
- Family
- Dromaeosauridae
- Genus
- Achillobator
- Species
- A. giganticus
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
- FR.MNUFR-15
- Type locality
- Bayan Shireh Formation, Mongolia