Dinosaur facts you can check, not just read

Look up any dinosaur genus. Every fact shows where it came from and how sure we are.

TryTyrannosaurus SpinosaurusEubrontes, a footprint type Abelisaurus

830/1,572 generawith full profiles so far, out of every genus the Paleobiology Database recognises.

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Every genus, A to ZFilter by period and by what each is known from: 1,321 from bones, 180 from footprints and traces, 69 from eggs.All genera

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Dinosaurs through timeMove through 186 million years and watch 3,011 fossil sites appear on the continents of the time.Map through time

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What's changedEvery update: genera added, facts whose value changed, and confidence levels that went up or down.The change log

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Each genus page shows what our sources say, how sure we are, and what isn't known yet. Tap a label for the reason.

Tyrannosaurus Osborn 1905

Data as of 4 October 2026

Named by: Osborn 1905
high
high: PBDB and Wikidata agree.
Lived: Campanian to Maastrichtian, 83.6–66 million years ago
medium
medium: Only PBDB gives a range this precise; NHM's records give only a broader interval, which contains it.
Found in: United States
high
high: NHM and PBDB both record it.
Canada
medium
medium: Only PBDB records it (5 records).
China
low
low: Only one PBDB record.
Mexico
low
low: Only one PBDB record.
Russia
low
low: Only one PBDB record.

Not known yet: its type species and what it was named after. 12 fossil records are held back from the profile (identified only tentatively, or only to a broader group).

Sources: Paleobiology Database (CC BY 4.0), Natural History Museum Data Portal (CC0 1.0), Wikidata (CC0 1.0)See the full profile

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Yes. Both are found, identified to species, in the same rocks of the same age: Dinosaur Park, Frenchman, Hell Creek, Lance, Scollard.

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Honest about what's known

Every fact has a receiptEach fact shows the source it came from and the licence we use it under.
Says how sure it isFacts are rated high, medium or low confidence, with the reason. How we rate confidence.
Disagreements shown, not hiddenWhen sources disagree, you see what each one says.
Disputes flagged, with a paper trailWhere sources genuinely conflict, the fact is shown as disputed and rated low until an Omnisaura editor rules on it, and every ruling has a recorded reason.
Gaps are answers"Not known yet" is said plainly, never filled with a guess.

Coverage

Growing every release

830/1,572genera with full profiles

120,000+facts, each traced to its source

3,011fossil sites in 61 countries

Latest changes

19 Oct 20263 removed; 99 facts changed; 98 confidence levels changed; diet added for 629 genera; way of life added for 628 genera.
12 Oct 2026Leptorhynchos added; 27 facts changed; 16 confidence levels changed.
12 Oct 2026368 genera added, including Aardonyx and Abdarainurus; 1 fact changed.

Every change to Omnisaura

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Sources

Built on open science

Paleobiology DatabaseFossil records, ages, classification and published references. CC BY 4.0
Natural History Museum, LondonCatalogued specimens from its collections. CC0
WikidataNames, identifiers and cross-references. CC0
Wikimedia CommonsOpenly licensed images, each credited individually

Content without a usable licence is left out. Ancient coastlines on the map: PaleoMAP PaleoCoastlines (CC BY 4.0).