Binomial Ankylosaurus magniventris · ANG-kee-loh-SOR-us
Late Cretaceous · 68-66 Ma
AI reconstructionAnkylosaurus fossil records in Fossil Atlas are mapped as selected modern discovery locations, with 31 source-backed records currently shown. Known from latest Cretaceous records in western North America, including Hell Creek and related northern Great Plains units. Key mapped formations in the current dataset include Belly River (Judith River) Group, Ferris Fm., Kirtland Formation. These pins are fossil record locations, not a complete ancient habitat map.
This remains a specimen profile: the reconstruction, measurements, field account, and evidence sections stay intact. The fossil-map answer is surfaced here so visitors from search can orient themselves before reading the full dossier.
Ankylosaurus was a large armored dinosaur from latest Cretaceous North America. Its fossil record includes armor, skull material, and the famous tail club, though complete skeletons are rare. Fossil Atlas uses selected records to connect it to Hell Creek and related northern Great Plains units.
Drawn true to scale on a metre ruler.
Length
measured7.5 m · 25 ft
Largest known specimens
Height
measured1.7 m · 5.5 ft
Body mass
estimate6,000 kg · 13,200 lb
Typical adult
Top speed
estimate10 km/h · 6 mph
Modelled, debated
Brain : body (EQ)
estimate0.7
Encephalization quotient
Position of this animal’s known range across 252 million years of the Mesozoic and beyond.
68-66 million years ago
Ankylosaurus carried a bony club at the end of its tail.
Its body armor makes its silhouette ideal for expedition cards.
It lived near the end of the age of dinosaurs.
Ankylosaurus adds a low, armored herbivore to the Hell Creek cluster.
Pins show selected fossil records for Ankylosaurus; use them as modern discovery evidence, not a complete range map. Modern fossil discovery map: pins show where selected fossil and specimen records were found today, not ancient Earth positions. What does this mean?
Specimen evidence
These are sourced specimen assets, separate from the AI reconstruction. Only media with clear open or reusable rights is displayed by default.
USNM V 7954_1
Michael Brett-Surman
USNM V 7724_1
Michael Brett-Surman
Ankylosaurus is represented here by selected fossil records from known from latest cretaceous records in western north america, including hell creek and related northern great plains units. Fossil Atlas maps those records as modern discovery locations.
No. The map shows modern fossil discovery locations from selected records. Ancient habitat and paleogeographic reconstructions are separate questions.
The current Fossil Atlas records include Belly River (Judith River) Group. Formation coverage depends on the selected dataset and may not be complete.
Yes. Use the expedition card generator to turn the Ankylosaurus map and specimen profile into a shareable card.
Selected fossil records from PBDB and museum biodiversity aggregators. Source labels and confidence notes help distinguish canonical paleobiology records from specimen-media records.
Reconstruction images are labeled illustrations and do not represent fossil evidence. Size, speed, and bite-force figures are typical published estimates and remain subject to revision as new specimens are described.
Maps use curated PBDB, museum, and specimen-source records with visible caveats.
Pins show where fossils were found or reported today, not exact ancient habitat positions.
Artwork is labeled separately from specimen photos, maps, and source records.
Request desk
Request another dinosaur like Ankylosaurus, submit a correction, or tell us what would make this page useful as a printable card.
Email capture is ready for a form endpoint. Until `NEXT_PUBLIC_REQUEST_FORM_ENDPOINT` is configured, the request desk opens a prefilled email.
Email request