Omnisaura

Dinosaur genus

Daemonosaurus

Sues et al. 2011

Daemonosaurus is a dinosaur genus known from bones, found in rocks 205.7–201.4 million years old, in the United States.

Confidence labels
How sure are we?2 high3 medium3 lowHow we rate confidence

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
205.7–201.4 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
Sues et al. 2011
highhigh: PBDB and Wikidata agree.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Described in
H.-D. Sues, S. J. Nesbitt, D. S. Berman, A. C. Henrici (2011). A late-surviving basal theropod dinosaur from the latest Triassic of North America. Proceedings of the Royal Society B 278: 3459–3464. Read it
highhigh: PBDB gives this publication for the name; its author and year match the naming authority (Sues et al. 2011), 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.

Type species
Daemonosaurus chauliodus
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Lived
Rhaetian, 205.7–201.4 million years ago
mediummedium: Only PBDB gives this; nothing contradicts it.
Omnisaura calculation205.7–201.4 million years ago, from its dated fossil records
lowlow: Omnisaura's calculation from only 1 dated record(s).
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Fossils found in
United States
lowlow: Only one PBDB record.
Sources

Given by: Paleobiology Database. How it was chosen: Union of all sources (ISO 3166).

Rock formations
Chinle
lowlow: Only one PBDB record.
Sources

Given by: Paleobiology Database. How it was chosen: Canonical names, automatic and editor-approved matches applied.

Parent group
Saurischia
mediummedium: Only PBDB gives this; nothing contradicts it.
Sources

Given by: Paleobiology Database. How it was chosen: PBDB leads.

Species named in its records
Daemonosaurus chauliodus
Sources

Given by: Paleobiology Database (the species its fossil records are identified as).

Known from
Bones
Sources

Given by: Paleobiology Database (what the name was based on).

Sources: Paleobiology Database (CC BY 4.0), 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.
  • Diet: no source we use gives it yet.
  • Way of life: 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: 3 facts come from a single source with nothing against them (rated medium): type species (PBDB); parent group (PBDB); age (headline) (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…?

?

No. Daemonosaurus had gone at least 117.8 million years before Tyrannosaurus appears in the fossil record, a longer gap than the 66 million years between Tyrannosaurus and today.

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 Daemonosaurus by where and when their fossils were found, by classification and by who named them. Select a name to open its page.

DaemonosaurusSame rocks, same timeSame parent groupSame naming authorAlso found in United StatesGrallatorKwanasaurusCoelophysisEucoelophysisand 1 moreAlwalkeriaAnticheiropusArgoidesChindesaurusand 7 moreLevnesoviaSaurornitholestesUrbacodonZephyrosaurusEosauropusEubrontesAnchisauripusEvazoumand 10 more

Same rocks, same time 5

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

GrallatorKwanasaurusCoelophysisEucoelophysisPseudotetrasauropus

Named by Sues 4

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

LevnesoviaSaurornitholestesUrbacodonZephyrosaurus

Found in United States 14

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

GrallatorEosauropusEubrontesAnchisauripusEvazoumAnomoepusCoelophysisDilophosauripusKwanasaurusAtreipusEucoelophysisKayentapusPseudotetrasauropusSyntarsus

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.