Dinosaur genus
Richardoestesia
Richardoestesia is a dinosaur genus known from bones, found in rocks 100.5–66 million years old, in 5 countries, most often Canada and the United States.
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
- Currie et al. 1990
high
high: PBDB and Wikidata agree.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Described in
- P. J. Currie, J. K. Rigby, Jr., R. E. Sloan (1990). Theropod teeth from the Judith River Formation of southern Alberta, Canada. In K. Carpenter and P. J. Currie (eds.), Dinosaur Systematics: Perspectives and Approaches. Cambridge University Press, Cambridge: 107–125. Read it
high
high: PBDB gives this publication for the name; its author and year match the naming authority (Currie et al. 1990), 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
- Kimmeridgian to Maastrichtian, 154.8–66 million years ago
medium
medium: Only PBDB gives this; nothing contradicts it.Omnisaura calculation100.5–66 million years ago, from its dated fossil recordsmedium
medium: Omnisaura's calculation from 155 confirmed PBDB records.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Fossils found in
- CanadaRomania
medium
medium: Only PBDB records it (72 records).Russiamedium
medium: Only PBDB records it (4 records).United Statesmedium
medium: Only PBDB records it (3 records).Uzbekistanmedium
medium: Only PBDB records it (68 records).medium
medium: Only PBDB records it (9 records).Sources
Given by: Paleobiology Database. How it was chosen: Union of all sources (ISO 3166).
- Rock formations
- 23, including Dinosaur Park, Hell Creek Formation, Oldman and Lance Formation
mixed
mixed: Levels differ between entries; each has its own.Show all 23, each with its confidence
AgujaBissektymedium
medium: Only PBDB records it (9 records).Cedar Mountainmedium
medium: Only PBDB records it (7 records).Densuș-Ciulamedium
medium: Only PBDB records it (3 records).Dinosaur Parkmedium
medium: Only PBDB records it (2 records).Ferrismedium
medium: Only PBDB records it (30 records).Foremostmedium
medium: Only PBDB records it (5 records).Hell Creek Formationmedium
medium: Only PBDB records it (2 records).Horseshoe Canyonmedium
medium: Only PBDB records it (36 records).Iron Springsmedium
medium: Only PBDB records it (2 records).Judith River Formationmedium
medium: Only PBDB records it (2 records).Khodzhakulmedium
medium: Only PBDB records it (4 records).Lance Formationmedium
medium: Only PBDB records it (2 records).Mesaverdemedium
medium: Only PBDB records it (6 records).Milk Rivermedium
medium: Only PBDB records it (2 records).Oldmanmedium
medium: Only PBDB records it (18 records).Udurchukanmedium
medium: Only PBDB records it (18 records).Murtoimedium
medium: Only PBDB records it (2 records).Pui Bedslow
low: Only one PBDB record.Râul Marelow
low: Only one PBDB record.Scollardlow
low: Only one PBDB record.Two Medicinelow
low: Only one PBDB record.Wapitilow
low: Only one PBDB record.low
low: Only one PBDB record.Sources
Given by: Paleobiology Database. How it was chosen: Canonical names, automatic and editor-approved matches applied.
- Family
- Dromaeosauridae
medium
medium: Only PBDB gives this; nothing contradicts it.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Parent group
- Dromaeosauridae
medium
medium: Only PBDB gives this; nothing contradicts it.Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
- Named after
- Richard Estes
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.
- Common names: no source we use gives it yet.
- Held back: 82 fossil records left out: identified only tentatively (for example "cf." or "?").
- Held back: 1 fossil record left out: identified as a related genus rather than this one.
- Resting on one source: 4 facts come from a single source with nothing against them (rated medium): parent group (PBDB); family (PBDB); age (headline) (PBDB); 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…?
Yes. Both are found, identified to species, in the same rocks of the same age: Dinosaur Park, Hell Creek, Scollard.
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 family
Other genera in Dromaeosauridae 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.