Dinosaur genus

Avimimus

Kurzanov 1981

Avimimus is a dinosaur genus known from bones, found in rocks 83.6–66 million years old, in Mongolia and Canada.

Confidence labels

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At a glance

Data as of 12 October 2026

83.6–66 Ma

Triassic

Jurassic

Cretaceous

252 million years ago20114366

The last non-bird dinosaurs died out 66 million years ago. That's as far from us as the end of this bar.

Named by: Kurzanov 1981
medium
medium: Only PBDB gives this; nothing contradicts it.
Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
Described in: S. M. Kurzanov (1981). O neobuchnykh teropodakh iz verkhnego mela MNR [An unusual theropod from the Upper Cretaceous of Mongolia]. Fossil Reptiles of Mongolia. Sovmestnaya Sovetsko-Mongol'skaya Paleontologicheskaya Ekspeditsiya, Trudy [The Joint Soviet-Mongolian Paleontological Expedition, Transactions] 24: 39–50.
medium
medium: Only PBDB gives this; its author and year match the naming authority (Kurzanov 1981).
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.
Type species: Avimimus portentosus
medium
medium: Only PBDB gives this; nothing contradicts it.
Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
Lived: Campanian to Maastrichtian, 83.6–66 million years ago
medium
medium: Only PBDB gives this; nothing contradicts it.
Omnisaura calculation83.6–66 million years ago, from its dated fossil records
medium
medium: Omnisaura's calculation from 8 confirmed PBDB records.
Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
Fossils found in: Mongolia
medium
medium: Only PBDB records it (7 records).
Canada
low
low: Only one PBDB record.
mixed
mixed: Levels differ between entries; each has its own.
Sources
Given by: Paleobiology Database. How it was chosen: Union of all sources (ISO 3166).
Rock formations: Nemegt
medium
medium: Only PBDB records it (5 records).
Baruungoyot
low
low: Only one PBDB record.
Dinosaur Park
low
low: Only one PBDB record.
Djadokhta
low
low: Only one PBDB record.
mixed
mixed: Levels differ between entries; each has its own.
Sources
Given by: Paleobiology Database. How it was chosen: Canonical names, automatic and editor-approved matches applied.
Parent group: Oviraptorosauria
medium
medium: Only PBDB gives this; nothing contradicts it.
Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
Known from: Bones
Sources
Given by: Paleobiology Database (what the name was based on).

Sources: Omnisaura editorial (Omnisaura editorial content (© Future Sailors, all rights reserved)), Paleobiology Database (CC BY 4.0), Natural History Museum Data Portal (CC0 1.0), Wikidata (CC0 1.0)Confidence levels and gaps are Omnisaura's own assessment.

Gaps are answers

What isn't known yet

Order: 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: 4 facts come from a single source with nothing against them (rated medium): authority (PBDB); type species (PBDB); parent group (PBDB); age (headline) (PBDB).

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…?

Did Avimimus meet ?

Possibly. Both are recorded from the same rocks of the same age (Dinosaur Park), but there one of them is identified only to genus (for example from an isolated tooth).

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.

Saurornitholestes Centrosaurus Tarbosaurus Richardoestesia Troodon Corythosaurus Saurolophus Chasmosaurus Gallimimus Protoceratops Dromaeosaurus Lambeosaurus Paronychodon Velociraptor Bagaceratops Gorgosaurusand 77 more

Same parent group

Other genera in Oviraptorosauria with a full profile.

Caudipteryx Incisivosaurus Saurexallopus

Where its fossils were found

8 fossil sites, with present-day and ancient positions

Open the map at this time

Cite this page

Omnisaura (2026). Avimimus. Future Sailors. https://www.omnisaura.com/genera/avimimus. Data as of 12 October 2026.

What's changed

No changes since the change log started (11 Oct 2026).

Every change to Omnisaura

Use this data

Download this genus as JSON With every source and licence attached. Spotted a problem? Tell us

Pictures

2 openly licensed pictures of Avimimus on Wikimedia Commons and museum sites, each with its own author and licence.

Avimimus mmartyniuk wiki.png
Matt Martyniuk, CC BY-SA 3.0
Avimimus multiviews.jpg
Carpenter, Kenneth, CC BY-SA 4.0

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.