Dinosaur genus
Leaellynasaura
Leaellynasaura is a dinosaur genus known from bones, found in rocks 113.2–110.1 million years old, in Australia.
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
- Rich and Vickers-Rich 1989
high
high: PBDB and Wikidata agree.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Described in
- T. H. Rich, P. Vickers-Rich (1989). Polar dinosaurs and biotas of the Early Cretaceous of southeastern Australia. National Geographic Research 5(1): 15–53.
high
high: PBDB gives this publication for the name; its author and year match the naming authority (Rich and Vickers-Rich 1989), on which PBDB and Wikidata agree.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
- Albian, 113.2–110.1 million years ago
high
high: PBDB and NHM agree.Omnisaura calculation113.2–110.1 million years ago, from its dated fossil recordsmedium
medium: Omnisaura's calculation from 4 confirmed PBDB records.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Fossils found in
- Australia
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
- Eumeralla
medium
medium: Only PBDB records it (4 records).Sources
Given by: Paleobiology Database. How it was chosen: Canonical names, automatic and editor-approved matches applied.
- Parent group
- Elasmaria
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.
- 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.
- 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
None open. Where our sources overlap, they agree on everything shown here.
Did it meet…?
No. Leaellynasaura had gone at least 26.5 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.
Same parent group
Other genera in Elasmaria with a full profile.
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.