Dinosaur genus
Ouranosaurus
Ouranosaurus is a dinosaur genus known from bones, found in rocks 121.4–100.5 million years old, in Niger and Tunisia.
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 10 October 2026- Named by
- Taquet 1972
disputed
low: PBDB and Wikidata agree on who named it but give years more than one apart; an editor has not ruled yet.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Described in
- P. Taquet (1972). Il giacimento di Gadoufaoua [The locality of Gadoufaoua]. I Dinosauri del Teneré 41: 51–60.
medium
medium: Only PBDB gives this; its author and year match the naming authority (Taquet 1972).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
- Aptian to Maastrichtian, 121.4–66 million years ago
medium
medium: Only PBDB gives this; nothing contradicts it.Omnisaura calculation121.4–100.5 million years ago, from its dated fossil recordsmedium
medium: Omnisaura's calculation from 5 confirmed PBDB records.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Fossils found in
- NigerTunisia
medium
medium: Only PBDB records it (4 records).low
low: Only one PBDB record.mixed
mixed: Levels differ between entries; each has its own.Sources
Given by: Paleobiology Database. How it was chosen: Union of all sources (ISO 3166).
- Rock formations
- ElrhazAïn el Guettar
medium
medium: Only PBDB records it (4 records).low
low: Only one PBDB record.mixed
mixed: Levels differ between entries; each has its own.Sources
Given by: Paleobiology Database. How it was chosen: Canonical names, automatic and editor-approved matches applied.
- Parent group
- Neoiguanodontia
medium
medium: Only PBDB gives this; nothing contradicts it.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Species named in its records
- Ouranosaurus nigeriensis
Sources
Given by: Paleobiology Database (the species its fossil records are identified as).
- Diet
- herbivore (inferred for its group)
medium
medium: Only PBDB gives this, and it infers it for the whole of Ornithopoda, the group this genus belongs to, not from this genus's own fossils.Sources
Given by: Paleobiology Database. How it was chosen: PBDB, inferred from a group the genus belongs to.
- Way of life
- ground dwelling, gregarious (inferred for its group)
low
low: PBDB infers this way of life for the whole of Ornithischia; behaviour is rarely known for one genus.Sources
Given by: Paleobiology Database. How it was chosen: PBDB, inferred from a group the genus belongs to.
- Known from
- Bones
Sources
Given by: Paleobiology Database (what the name was based on).
Gaps are answers
What isn't known yet
- Type species: no source we use gives it yet.
- Order: no source we use gives it yet.
- Family: no source we use gives it yet.
- Common names: no source we use gives it yet.
- What it was named after: no source we use gives it yet.
- Held back: 3 fossil records left out: identified only tentatively (for example "cf.", "?" or the name in quotation marks).
- Resting on one source: 3 facts come from a single source with nothing against them (rated medium): parent group (PBDB); age (headline) (PBDB); diet (PBDB).
Size and appearance aren't covered yet, and diet and way of life only as PBDB infers them for the wider group. Omnisaura leaves the rest out rather than guess.
Where sources disagree
1 openAuthority
- Taquet 1972PBDB (shown above)
- Philippe Taquet, 1976Wikidata
The sources agree on who named it but give different years. An editor hasn't ruled yet, so this is rated low until they do.
Did it meet…?
No. Ouranosaurus had gone at least 16.9 million years before Tyrannosaurus appears in the fossil record.
Going by the ages and rock formations of their dated fossils, as on the map. Compare their fossil sites on the map.
Connections
Genera linked to Ouranosaurus by where and when their fossils were found, by classification and by who named them. Select a name to open its page.
Same rocks, same time 6
Genera found in the same rock units, from rocks of overlapping age, the most shared fossil sites first.
Same parent group: Neoiguanodontia 2
Other genera in Neoiguanodontia with a full profile.
Named by Taquet 2
Genera whose naming authority includes the same surname. The authority has no initials, so different people who share a surname can appear together.
Found in Niger 8
Other genera found in Niger, from rocks of overlapping age, the most fossil sites there first.
Credits
Where this page comes from
- Paleobiology DatabaseCC BY 4.0 · fossil records, ages, classification
- 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.