Dinosaur genus

Bagaceratops

Maryanska and Osmólska 1975

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

Confidence labels

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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

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: Maryanska and Osmólska 1975
medium
medium: Only PBDB gives this; nothing contradicts it.
Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
Described in: T. Maryanska, H. Osmólska (1975). Protoceratopsidae (Dinosauria) of Asia. Palaeontologica Polonica 33: 133–181.
medium
medium: Only PBDB gives this; its author and year match the naming authority (Maryanska and Osmólska 1975).
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: Bagaceratops rozhdestvenskyi
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 16 confirmed PBDB records.
Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
Fossils found in: China
medium
medium: Only PBDB records it (2 records).
Mongolia
medium
medium: Only PBDB records it (14 records).
Sources
Given by: Paleobiology Database. How it was chosen: Union of all sources (ISO 3166).
Rock formations: Baruungoyot
medium
medium: Only PBDB records it (10 records).
Bayan Mandahu
medium
medium: Only PBDB records it (2 records).
Djadokhta
medium
medium: Only PBDB records it (3 records).
Nemegt
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.
Family: Protoceratopsidae
medium
medium: Only PBDB gives this; nothing contradicts it.
Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
Parent group: Protoceratopsidae
medium
medium: Only PBDB gives this; nothing contradicts it.
Sources
Given by: Paleobiology Database. How it was chosen: PBDB leads.
Species named in its records: Bagaceratops rozhdestvenskyi
Sources
Given by: Paleobiology Database (the species its fossil records are identified as).
Older or other names: Gobiceratops (a junior synonym); Lamaceratops (a junior synonym); Magnirostris (a junior synonym); Platyceratops (a junior synonym)
Sources
Given by: Paleobiology Database (names it treats as this genus).
Diet: herbivore (inferred for its group)
medium
medium: Only PBDB gives this, and it infers it for the whole of Ceratopsia, 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 (inferred for its group)
low
low: PBDB infers this way of life for the whole of Ceratopsia; 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).

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.
Common names: no source we use gives it yet.
What it was named after: no source we use gives it yet.
Held back: 2 fossil records left out: identified only tentatively (for example "cf.", "?" or the name in quotation marks).
Resting on one source: 6 facts come from a single source with nothing against them (rated medium): authority (PBDB); type species (PBDB); parent group (PBDB); family (PBDB); 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

None open. Where our sources overlap, they agree on everything shown here.

Did it meet…?

Did Bagaceratops meet ?

Same time, different places. Their fossils overlap in age, 83.6 to 66 million years ago, but no rock formation holds both.

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 Bagaceratops 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 52

Genera found in the same rock units, from rocks of overlapping age, the most shared fossil sites first.

Tarbosaurus Protoceratops Saurolophus Gallimimus Velociraptor Pinacosaurus Protoceratopsidovum Elongatoolithus Avimimus Coralloidoolithus Macroolithus Faveoloolithus Deinocheirus Dendroolithus Mononykus Spheroolithusand 36 more

Same family: Protoceratopsidae 2

Other genera in Protoceratopsidae with a full profile.

Breviceratops Protoceratops

Named by Maryanska and Osmólska 7

Genera whose naming authority includes the same surname. The authority has no initials, so different people who share a surname can appear together.

Barsboldia Bagaraatan Gallimimus Homalocephale Prenocephale Saichania Tarchia

Found in Mongolia 55

Other genera found in Mongolia, from rocks of overlapping age, the most fossil sites there first.

Tarbosaurus Saurolophus Gallimimus Protoceratops Velociraptor Pinacosaurus Protoceratopsidovum Elongatoolithus Avimimus Coralloidoolithus Macroolithus Faveoloolithus Deinocheirus Dendroolithus Mononykus Spheroolithusand 39 more

Where its fossils were found

13 fossil sites, with present-day and ancient positions

Open the map at this time

Cite this page

Omnisaura (2026). Bagaceratops. Future Sailors. https://www.omnisaura.com/genera/bagaceratops. Data as of 11 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. Also recorded in: Paleobiology Database · GBIF · Wikidata Spotted a problem? Tell us

Pictures

1 openly licensed picture of Bagaceratops on Wikimedia Commons and museum sites, each with its own author and licence.

Bagaceratops.JPG
Ghedoghedo, CC BY-SA 3.0

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.