Dinosaur genus
Valdosaurus
Valdosaurus is a dinosaur genus known from bones, found in rocks 137.1–121.4 million years old, in the United Kingdom.
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 11 October 2026- Named by
- Galton 1977
medium
medium: Only PBDB gives this; nothing contradicts it.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Described in
- P. M. Galton (1977). The Upper Jurassic dinosaur Dryosaurus and a Laurasia-Gondwana connection in the Upper Jurassic. Nature 268(5617): 230–232.
medium
medium: Only PBDB gives this; its author and year match the naming authority (Galton 1977).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
- Kimmeridgian to Aptian, 154.8–119.6 million years ago
medium
medium: Only PBDB gives this; nothing contradicts it.Omnisaura calculation137.1–121.4 million years ago, from its dated fossil recordsmedium
medium: Omnisaura's calculation from 7 confirmed PBDB records.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Fossils found in
- United Kingdom
high
high: NHM and PBDB both record it.Sources
Given by: Paleobiology Database; Natural History Museum Data Portal. How it was chosen: Union of all sources (ISO 3166).
- Rock formations
- Wessex FormationTunbridge Wells Sand Formation
high
high: NHM and PBDB both record it.Weald Clay Formationmedium
medium: Only PBDB records it (3 records).disputed
low: Only NHM gives this name and it matches no PBDB formation; awaiting an editor.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
- Dryosauridae
disputed
low: Sources disagree and an editor has not ruled yet.Sources
Given by: Paleobiology Database; Natural History Museum Data Portal. How it was chosen: PBDB leads.
- Parent group
- Dryosauridae
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.
- Species named in its records
- Valdosaurus canaliculatus
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.
- Common names: no source we use gives it yet.
- What it was named after: no source we use gives it yet.
- Held back: 5 fossil records left out: identified only tentatively (for example "cf.", "?" or the name in quotation marks).
- Held back: 1 fossil record left out: identified as a related genus rather than this one.
- Resting on one source: 5 facts come from a single source with nothing against them (rated medium): authority (PBDB); parent group (PBDB); order (NHM); 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
2 openFamily
- DryosauridaePBDB (shown above)
- HypsilophodontidaeNHM
The sources give different values. An editor hasn't ruled yet, so this is rated low until they do.
Formations
- records nothing herePBDB
- Weald Clay FormationNHM
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…?
No. Valdosaurus had gone at least 37.8 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 Valdosaurus 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 14
Genera found in the same rock units, from rocks of overlapping age, the most shared fossil sites first.
Named by Galton 8
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 United Kingdom 17
Other genera found in United Kingdom, 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
- 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.