Omnisaura
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Dinosaur genus

Centrosaurus

Lambe 1905

Centrosaurus is a dinosaur genus known from bones, found in rocks 83.6–66 million years old, in Canada and the United States.

Also calledja セントロサウルス
mediummedium: Only Wikidata gives this; nothing contradicts it.
Confidence labels
How sure are we?3 high10 medium1 lowHow we rate confidence

Confidence labels are switched off. Facts with low confidence, or where sources disagree, still carry a small dot: tap it for the reason.

At a glance

Data as of 12 October 2026
83.6–66 Ma
Triassic
Jurassic
Cretaceous
252 million years ago20114366

The last non-bird dinosaurs died out 66 million years ago. That's as far from us as the end of this bar.

Named by
Lambe 1905
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Described in
L. M. Lambe (1905). On the squamoso-parietal crest of the horned dinosaurs Centrosaurus apertus and Monoclonius canadensis from the Cretaceous of Alberta. Proceedings and Transactions of the Royal Society of Canada, series 2 10(4): 1–9.
mediummedium: Only PBDB gives this; its author and year match the naming authority (Lambe 1905).
Sources

Given by: Paleobiology Database. The publication the Paleobiology Database gives as the authority for this genus name, usually the one that first named and described it.

Lived
Campanian to Maastrichtian, 83.6–66 million years ago
highhigh: PBDB and NHM agree.
Omnisaura calculation83.6–66 million years ago, from its dated fossil records
mediummedium: Omnisaura's calculation from 57 confirmed PBDB records.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Fossils found in
Canada
highhigh: NHM and PBDB both record it.
United States
mediummedium: Only PBDB records it (3 records).
mixedmixed: Levels differ between entries; each has its own.
Sources

Given by: Paleobiology Database; Natural History Museum Data Portal. How it was chosen: Union of all sources (ISO 3166).

Rock formations
Dinosaur Park
mediummedium: Only PBDB records it (47 records).
Judith River Formation
mediummedium: Only PBDB records it (2 records).
Oldman
mediummedium: Only PBDB records it (4 records).
Belly River Series
disputedlow: Only NHM gives this name and it matches no PBDB formation; awaiting an editor.
mixedmixed: Levels differ between entries; each has its own.
Sources

Given by: Paleobiology Database; Natural History Museum Data Portal. How it was chosen: Canonical names, automatic and editor-approved matches applied.

Family
Ceratopsidae
highhigh: PBDB and NHM agree.
Sources

Given by: Paleobiology Database; Natural History Museum Data Portal. How it was chosen: PBDB leads.

Parent group
Centrosaurini
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Order
Ornithischia
mediummedium: Only NHM gives this; nothing contradicts it.
Sources

Given by: Natural History Museum Data Portal. How it was chosen: Gap filled from NHM.

Known from
Bones
Sources

Given by: Paleobiology Database (what the name was based on).

Sources: Paleobiology Database (CC BY 4.0), Natural History Museum Data Portal (CC0 1.0), Wikidata (CC0 1.0)Confidence levels and gaps are Omnisaura's own assessment.

Gaps are answers

What isn't known yet

  • Type species: no source we use gives it yet.
  • What it was named after: no source we use gives it yet.
  • Resting on one source: 4 facts come from a single source with nothing against them (rated medium): authority (PBDB); parent group (PBDB); order (NHM); common names (Wikidata).

Size, diet and behaviour aren't covered yet. Omnisaura leaves them out rather than guess.

Where sources disagree

1 open

Formations

  • NonePBDB
  • Belly River SeriesNHM

One source names a formation the other does not. An editor hasn't ruled yet, so this is rated low until they do.

Did it meet…?

?

Yes. Both are found, identified to species, in the same rocks of the same age: Dinosaur Park.

Going by the ages and rock formations of their dated fossils, as on the map. Compare their fossil sites on the map.

Lived alongside

Genera found in the same rock formations, from rocks of the same age.

SaurornitholestesTroodonRichardoestesiaParonychodonDromaeosaurusCorythosaurusStegocerasChasmosaurusLambeosaurusGorgosaurusEuoplocephalusStenonychosaurusDaspletosaurusStyracosaurusChirostenotesGryposaurusand 45 more

Same family

Other genera in Ceratopsidae with a full profile.

AchelousaurusAgujaceratopsAlbertaceratopsAnchiceratopsArrhinoceratopsAvaceratopsBisticeratopsBravoceratopsCeratopsipesChasmosaurusCoahuilaceratopsCoronosaurusCrittendenceratopsDiabloceratopsEiniosaurusKosmoceratopsand 9 more

Credits

Where this page comes from

  • Paleobiology DatabaseCC BY 4.0 · fossil records, ages, classification
  • Natural History Museum Data PortalCC0 1.0 · catalogued specimens
  • WikidataCC0 1.0 · names and identifiers
  • OmnisauraOmnisaura editorial · confidence levels and gaps
  • PaleoMAP PaleoCoastlines (Kocsis and Scotese 2021)CC BY 4.0 · ancient coastlines on the small map
  • Natural EarthPublic domain · today's coastlines

Pictures linked from this page are credited beside each one, with their own licences; the full list is in the JSON download.