Binomial Brachiosaurus altithorax · brak-ee-oh-SORE-us
Late Jurassic - 154-145 Ma
AI reconstructionBrachiosaurus fossil records in Fossil Atlas are mapped as selected modern discovery locations, with 19 source-backed records currently shown. Western North America, especially Morrison Formation records, with related brachiosaurid context from other Late Jurassic deposits. Key mapped formations in the current dataset include Morrison Fm, Morrison, Süntel. 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.
Brachiosaurus was a large Late Jurassic sauropod best known from North American Morrison Formation material. Its long forelimbs and elevated shoulder posture made it one of the most recognizable high-browsing dinosaurs. Fossil Atlas maps selected modern discovery locations rather than reconstructing a full ancient habitat.
Drawn true to scale on a metre ruler.
Length
measured21 m · 69 ft
Largest known specimens
Height
measured9.4 m (31 ft)
Body mass
estimate35,000 kg · 77,000 lb
Typical adult
Top speed
estimate10 km/h · 6 mph
Modelled, debated
Position of this animal’s known range across 252 million years of the Mesozoic and beyond.
154-145 million years ago
Brachiosaurus carried unusually long forelimbs, giving it a high-shouldered profile unlike many classic sauropods.
Its Morrison Formation context links it to one of the most famous dinosaur-bearing rock units in North America.
Fossil Atlas treats its mapped pins as discovery records, not as a complete ancient range.
Pins show selected fossil records for Brachiosaurus; 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 PAL 337859
Michael Brett-Surman
USNM V 5730_9
Michael Brett-Surman
USNM PAL 337859
Michael Brett-Surman
USNM PAL 337859
Michael Brett-Surman
Brachiosaurus is represented here by selected fossil records from western north america, especially morrison formation records, with related brachiosaurid context from other late jurassic deposits. 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 Morrison Fm. Formation coverage depends on the selected dataset and may not be complete.
Yes. Use the expedition card generator to turn the Brachiosaurus 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.
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