Pachycephalosaurus wyomingensis
E366859
Pachycephalosaurus wyomingensis is a Late Cretaceous dome-skulled herbivorous dinosaur known for its extremely thick, bony skull roof, thought to have been used in head-butting or display behaviors.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Pachycephalosaurus | 4 |
| Pachycephalosauria | 2 |
| Pachycephalosaurus wyomingensis canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3502402 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
Target entity: Pachycephalosaurus wyomingensis Context triple: [Hell Creek Formation, containsFossil, Pachycephalosaurus wyomingensis]
-
A.
Daspletosaurus
Daspletosaurus was a large, carnivorous tyrannosaurid dinosaur from the Late Cretaceous of North America, known as a powerful apex predator with a massive skull and robust teeth.
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B.
Dryosaurus
Dryosaurus was a small, fast, plant-eating ornithopod dinosaur from the Late Jurassic period, known for its long legs and lightweight build.
-
C.
Edmontosaurus annectens
Edmontosaurus annectens is a large, late Cretaceous duck-billed hadrosaurid dinosaur known for its broad, flat snout and abundant fossil remains in western North America.
-
D.
Triceratops
Triceratops is a large, herbivorous, three-horned dinosaur from the Late Cretaceous period, recognizable by its massive bony frill and distinctive facial horns.
-
E.
Stegosaurus
Stegosaurus is a large, herbivorous, plated dinosaur from the Late Jurassic period, recognizable by the distinctive double row of bony plates along its back and spiked tail.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Pachycephalosaurus wyomingensis Target entity description: Pachycephalosaurus wyomingensis is a Late Cretaceous dome-skulled herbivorous dinosaur known for its extremely thick, bony skull roof, thought to have been used in head-butting or display behaviors.
-
A.
Daspletosaurus
Daspletosaurus was a large, carnivorous tyrannosaurid dinosaur from the Late Cretaceous of North America, known as a powerful apex predator with a massive skull and robust teeth.
-
B.
Dryosaurus
Dryosaurus was a small, fast, plant-eating ornithopod dinosaur from the Late Jurassic period, known for its long legs and lightweight build.
-
C.
Edmontosaurus annectens
Edmontosaurus annectens is a large, late Cretaceous duck-billed hadrosaurid dinosaur known for its broad, flat snout and abundant fossil remains in western North America.
-
D.
Triceratops
Triceratops is a large, herbivorous, three-horned dinosaur from the Late Cretaceous period, recognizable by its massive bony frill and distinctive facial horns.
-
E.
Stegosaurus
Stegosaurus is a large, herbivorous, plated dinosaur from the Late Jurassic period, recognizable by the distinctive double row of bony plates along its back and spiked tail.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
ornithischian dinosaur
ⓘ
pachycephalosaurid dinosaur ⓘ species ⓘ |
| bodyLength | approximately 4.5 meters ⓘ |
| bodyMass | approximately 300 to 450 kilograms ⓘ |
| clade |
Ceratopsidae
ⓘ
surface form:
Marginocephalia
|
| class | Reptilia ⓘ |
| coexistedWith |
Edmontosaurus annectens
ⓘ
Triceratops ⓘ
surface form:
Triceratops horridus
Tyrannosaurus ⓘ
surface form:
Tyrannosaurus rex
|
| diet |
herbivorous
ⓘ
possibly omnivorous ⓘ |
| extinctionEvent |
Cretaceous–Paleogene boundary
ⓘ
surface form:
Cretaceous–Paleogene extinction event
|
| family | Pachycephalosauridae ⓘ |
| feedingAdaptation | teeth suited for browsing vegetation ⓘ |
| firstDescribedBy | Barnum Brown ⓘ |
| firstDescribedInYear | 1943 ⓘ |
| fossilsFoundIn |
Montana
ⓘ
South Dakota ⓘ Wyoming ⓘ |
| fossilTypeMaterial | partial skull ⓘ |
| genus |
Pachycephalosaurus wyomingensis
self-linksurface differs
ⓘ
surface form:
Pachycephalosaurus
|
| geologicalFormation |
Hell Creek Formation
ⓘ
Lance Formation ⓘ |
| kingdom | Animalia ⓘ |
| knownFrom |
cranial material
ⓘ
limited postcranial remains ⓘ |
| livedInAge | Maastrichtian ⓘ |
| livedInContinent | North America ⓘ |
| livedInPeriod | Late Cretaceous ⓘ |
| locomotion | bipedal ⓘ |
| namedAfter | Wyoming ⓘ |
| order | Ornithischia ⓘ |
| parentTaxon |
Pachycephalosaurus wyomingensis
self-linksurface differs
ⓘ
surface form:
Pachycephalosaurus
|
| phylum | Chordata ⓘ |
| possibleBehavior |
flank-butting
ⓘ
head-butting ⓘ visual display ⓘ |
| posture | upright bipedal stance ⓘ |
| reproduction | oviparous ⓘ |
| skullCharacteristic |
bony knobs and spikes on skull
ⓘ
dome-shaped skull roof ⓘ extremely thick cranial dome ⓘ |
| suborder | Cerapoda ⓘ |
| tailCharacteristic | stiffened tail with ossified tendons ⓘ |
| taxonRank | species ⓘ |
| temporalRangeEnd | about 66 million years ago ⓘ |
| thermoregulation | likely homeothermic or mesothermic ⓘ |
| toothType | small leaf-shaped teeth ⓘ |
| typeSpeciesOf |
Pachycephalosaurus wyomingensis
self-linksurface differs
ⓘ
surface form:
Pachycephalosaurus
|
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Subject: Pachycephalosaurus wyomingensis Description of subject: Pachycephalosaurus wyomingensis is a Late Cretaceous dome-skulled herbivorous dinosaur known for its extremely thick, bony skull roof, thought to have been used in head-butting or display behaviors.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.