Dinosaur genus
Phuwiangosaurus
Phuwiangosaurus is a dinosaur genus known from bones, found in rocks 125.8–121.4 million years old, in Thailand.
medium
medium: Only Wikidata gives this; nothing contradicts it.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
- Martin et al. 1994
medium
medium: Only PBDB gives this; nothing contradicts it.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Described in
- V. Martin, E. Buffetaut, V. Suteethorn (1994). A new genus of sauropod dinosaur from the Sao Khua Formation (Late Jurassic or Early Cretaceous) of northeastern Thailand. Compte Rendus de l'Academie des Sciences, Paris, série IIa 319: 1085–1092.
medium
medium: Only PBDB gives this; its author and year match the naming authority (Martin et al. 1994).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
- Barremian to Aptian, 125.8–113.2 million years ago
medium
medium: Only PBDB gives this; nothing contradicts it.Omnisaura calculation125.8–121.4 million years ago, from its dated fossil recordsmedium
medium: Omnisaura's calculation from 12 confirmed PBDB records.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Fossils found in
- Thailand
medium
medium: Only PBDB records it (12 records).Sources
Given by: Paleobiology Database. How it was chosen: Union of all sources (ISO 3166).
- Rock formations
- Sao Khua
medium
medium: Only PBDB records it (12 records).Sources
Given by: Paleobiology Database. How it was chosen: Canonical names, automatic and editor-approved matches applied.
- Family
- Euhelopodidae
medium
medium: Only PBDB gives this; nothing contradicts it.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Parent group
- Euhelopodidae
medium
medium: Only PBDB gives this; nothing contradicts it.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Named after
- Phu Wiang; Sirindhorn, Princess Royal
medium
medium: Only Wikidata gives this; nothing contradicts it.Sources
Given by: Wikidata. How it was chosen: Wikidata leads.
- 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.
- Held back: 3 fossil records left out: identified only tentatively (for example "cf." or "?").
- Resting on one source: 6 facts come from a single source with nothing against them (rated medium): authority (PBDB); parent group (PBDB); family (PBDB); age (headline) (PBDB); common names (Wikidata); named after (Wikidata).
Size, diet and behaviour aren't covered yet. Omnisaura leaves them out rather than guess.
Where sources disagree
None open. Where our sources overlap, they agree on everything shown here.
Did it meet…?
No. Phuwiangosaurus 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.
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
- 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.