Dinosaur genus
Telmatosaurus
Telmatosaurus is a dinosaur genus known from bones, found in rocks 83.6–66 million years old, in Romania and France.
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- Named by
- Nopcsa 1903
disputed
low: Sources disagree and an editor has not ruled yet.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Described in
- B. F. Nopcsa (1903). Telmatosaurus, new name for the dinosaur Limnosaurus. Geological Magazine, decade 4 10: 94–95.
medium
medium: Only PBDB gives this; its author and year match the naming authority (Nopcsa 1903).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
high
high: PBDB and NHM agree.Omnisaura calculation83.6–66 million years ago, from its dated fossil recordsmedium
medium: Omnisaura's calculation from 20 confirmed PBDB records.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Fossils found in
- RomaniaFrance
high
high: NHM and PBDB both record it.low
low: Only one PBDB record.mixed
mixed: 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
- Densuș-CiulaSebeş
medium
medium: Only PBDB records it (4 records).Sînpetrumedium
medium: Only PBDB records it (4 records).Pui Bedsmedium
medium: Only PBDB records it (8 records).Râul Marelow
low: Only one PBDB record.Sanpetru Formationlow
low: Only one PBDB record.Sanpetru Formation, Densus Ciula Formation and Bozes stratadisputed
low: Only NHM gives this name and it matches no PBDB formation; awaiting an editor.Sanpetru and Densus-Ciula Formationdisputed
low: Only NHM gives this name and it matches no PBDB formation; awaiting an editor.Şarddisputed
low: Only NHM gives this name and it matches no PBDB formation; awaiting an editor.low
low: Only one PBDB record.mixed
mixed: 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
- Telmatosauridae
disputed
low: Sources disagree and an editor has not ruled yet.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Parent group
- Telmatosauridae
medium
medium: Only PBDB gives this; nothing contradicts it.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Order
- Ornithischia
medium
medium: 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).
Gaps are answers
What isn't known yet
- Type species: 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 "?").
- Resting on one source: 2 facts come from a single source with nothing against them (rated medium): parent group (PBDB); order (NHM).
Size, diet and behaviour aren't covered yet. Omnisaura leaves them out rather than guess.
Where sources disagree
5 openFamily
- TelmatosauridaePBDB (shown above)
- HadrosauridaeNHM
The sources give different values. An editor hasn't ruled yet, so this is rated low until they do.
Formations
- NonePBDB
- Sanpetru FormationNHM
One source names a formation the other does not. An editor hasn't ruled yet, so this is rated low until they do.
Formations
- NonePBDB
- Sanpetru Formation, Densus Ciula Formation and Bozes strataNHM
One source names a formation the other does not. An editor hasn't ruled yet, so this is rated low until they do.
Formations
- NonePBDB
- Sanpetru and Densus-Ciula FormationNHM
One source names a formation the other does not. An editor hasn't ruled yet, so this is rated low until they do.
Authority
- Nopcsa 1903PBDB (shown above)
- Franz Nopcsa von Felső-Szilvás, 1903Wikidata
The sources give different values. An editor hasn't ruled yet, so this is rated low until they do.
Did it meet…?
Same time, different places. Their fossils overlap in age, 83.6 to 66 million years ago, but no rock formation holds both.
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.
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.