Fossil Atlas — Specimen ProfileCatalog FA·BRAC·1900
Plate 16 · Herbivore

BrachiosaurusFossil map and specimen profile

Binomial Brachiosaurus altithorax · brak-ee-oh-SORE-us

Late Jurassic - 154-145 Ma

Classification
Sauropod dinosaur
Family
Brachiosauridae
Genus / Species
Brachiosaurus altithorax
Diet
Herbivore
Range
Western North America, especially Morrison Formation records, with related brachiosaurid context from other Late Jurassic deposits.
AI reconstruction of BrachiosaurusAI reconstruction
Plate 16 — illustration, not fossil evidenceFA·BRAC·1900
Quick provenance answer

Where have Brachiosaurus fossils been found?

Brachiosaurus 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.

Mapped records
19
Modern range note
Western North America, especially Morrison Formation records, with related brachiosaurid context from other Late Jurassic deposits.
Key formations
Morrison Fm, Morrison, Süntel
Map caveat
Modern fossil locations, not ancient habitat.
Field account

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.

Built to scale

Size against a person

Drawn true to scale on a metre ruler.

0 m2468101214161820222426
Brachiosaurus21 m (69 ft)Adult human — 1.8 m12× longer than a person is tall
Field measurements

Measurements & capabilities

MeasuredEstimate

Length

measured

21 m · 69 ft

Largest known specimens

Height

measured

9.4 m (31 ft)

Body mass

estimate

35,000 kg · 77,000 lb

Typical adult

Top speed

estimate

10 km/h · 6 mph

Modelled, debated

Known from

Fossil evidence

01Limb bones
02Vertebrae
03Partial skeletons
04Sauropod quarry records
Key formations
Morrison FmMorrisonSüntelKadziTendaguru
Geologic timeline

When they lived

Position of this animal’s known range across 252 million years of the Mesozoic and beyond.

252 MaToday

154-145 million years ago

From the notebook

Field notes

01

Brachiosaurus carried unusually long forelimbs, giving it a high-shouldered profile unlike many classic sauropods.

02

Its Morrison Formation context links it to one of the most famous dinosaur-bearing rock units in North America.

03

Fossil Atlas treats its mapped pins as discovery records, not as a complete ancient range.

Modern discovery map

Brachiosaurus fossil discovery map

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?

Modern Fossil Discovery Map

Specimen evidence

Museum images and 3D records

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
Specimen image

USNM PAL 337859

Michael Brett-Surman

CC0idigbio
View source
USNM V 5730_9
Specimen image

USNM V 5730_9

Michael Brett-Surman

CC0idigbio
View source
USNM PAL 337859
Specimen image

USNM PAL 337859

Michael Brett-Surman

CC0idigbio
View source
USNM PAL 337859
Specimen image

USNM PAL 337859

Michael Brett-Surman

CC0idigbio
View source
Research notes

Brachiosaurus fossil map FAQ

Where have Brachiosaurus fossils been found?

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.

Is this map where Brachiosaurus lived?

No. The map shows modern fossil discovery locations from selected records. Ancient habitat and paleogeographic reconstructions are separate questions.

What formation is Brachiosaurus associated with here?

The current Fossil Atlas records include Morrison Fm. Formation coverage depends on the selected dataset and may not be complete.

Can I make a Brachiosaurus expedition card?

Yes. Use the expedition card generator to turn the Brachiosaurus map and specimen profile into a shareable card.

Data sources

Attribution

Caveats

Important notes

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.

Trust note

Selected source-backed records

Maps use curated PBDB, museum, and specimen-source records with visible caveats.

Trust note

Modern discovery locations

Pins show where fossils were found or reported today, not exact ancient habitat positions.

Trust note

Reconstruction is not evidence

Artwork is labeled separately from specimen photos, maps, and source records.

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