Binomial Ceratosaurus nasicornis · seh-RAT-oh-SORE-us
Late Jurassic - 153-145 Ma
AI reconstructionCeratosaurus fossil records in Fossil Atlas are mapped as selected modern discovery locations, with 24 source-backed records currently shown. Late Jurassic records from the Morrison Formation and selected records from Portugal and Tanzania in the current source mix. Key mapped formations in the current dataset include Morrison Fm, Morrison, Tacuarembó. 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.
Ceratosaurus was a medium to large Late Jurassic theropod with a distinctive horned skull. Fossil Atlas uses selected records to connect the Morrison Formation with other Jurassic localities such as Lourinha and Tendaguru.
Drawn true to scale on a metre ruler.
Length
measured6.7 m · 22 ft
Largest known specimens
Height
measured2.1 m (7 ft)
Body mass
estimate700 kg · 1,540 lb
Typical adult
Top speed
estimate40 km/h · 25 mph
Modelled, debated
Position of this animal’s known range across 252 million years of the Mesozoic and beyond.
153-145 million years ago
Ceratosaurus had a distinctive nasal horn and bony ornaments above the eyes.
Its record helps connect North American and European Jurassic fossil pages.
Fossil Atlas uses its records to make the Jurassic predator set less Allosaurus-only.
Pins show selected fossil records for Ceratosaurus; 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.
Ceratosaurus sp. (YPM VP 000319). Digital Image: Yale Peabody Museum; photo by Division of Vertebrate Paleontology, Yale Peabody Museum 2016
Division of Vertebrate Paleontology, Yale Peabody Museum
Ceratosaurus is represented here by selected fossil records from late jurassic records from the morrison formation and selected records from portugal and tanzania in the current source mix. 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 Ceratosaurus 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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