Iguanodon
E283313
Iguanodon was a large, herbivorous ornithopod dinosaur from the Early Cretaceous, best known for its beak-like mouth and distinctive thumb spikes likely used for defense.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Iguanodon canonical | 5 |
| Iguanodon bernissartensis | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2622271 — 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.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Iguanodon Context triple: [DINOSAUR, featuresDinosaur, Iguanodon]
-
A.
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.
-
B.
Camarasaurus
Camarasaurus was a large, long-necked herbivorous sauropod dinosaur from the Late Jurassic period of North America.
-
C.
Brachiosaurus
Brachiosaurus is a large, long-necked sauropod dinosaur famous for its towering height and iconic appearances in popular culture.
-
D.
Diplodocus
Diplodocus is a long-necked, whip-tailed sauropod dinosaur from the Late Jurassic period of North America, known for its great size and distinctive skeletal proportions.
-
E.
Apatosaurus
Apatosaurus is a large, long-necked sauropod dinosaur from the Late Jurassic of North America, known for its massive body, long tail, and historically confused taxonomy with Brontosaurus.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Iguanodon Target entity description: Iguanodon was a large, herbivorous ornithopod dinosaur from the Early Cretaceous, best known for its beak-like mouth and distinctive thumb spikes likely used for defense.
-
A.
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.
-
B.
Camarasaurus
Camarasaurus was a large, long-necked herbivorous sauropod dinosaur from the Late Jurassic period of North America.
-
C.
Brachiosaurus
Brachiosaurus is a large, long-necked sauropod dinosaur famous for its towering height and iconic appearances in popular culture.
-
D.
Diplodocus
Diplodocus is a long-necked, whip-tailed sauropod dinosaur from the Late Jurassic period of North America, known for its great size and distinctive skeletal proportions.
-
E.
Apatosaurus
Apatosaurus is a large, long-necked sauropod dinosaur from the Late Jurassic of North America, known for its massive body, long tail, and historically confused taxonomy with Brontosaurus.
- F. None of above. chosen
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
dinosaur
ⓘ
herbivorous dinosaur ⓘ ornithopod ⓘ prehistoric animal ⓘ |
| clade | Dinosauria ⓘ |
| contributedTo | early reconstructions of dinosaur posture ⓘ |
| diet | herbivorous ⓘ |
| distinctiveFeature |
beak-like mouth
ⓘ
large thumb spike ⓘ |
| estimatedLength |
10 meters
ⓘ
up to 13 meters ⓘ |
| estimatedMass |
3 metric tons
ⓘ
up to 5 metric tons ⓘ |
| extinctionStatus | extinct ⓘ |
| family | Iguanodontidae ⓘ |
| feedingAdaptation |
cheek teeth for grinding plants
ⓘ
keratinous beak ⓘ |
| forelimbFeature | prehenile fifth finger (grasping) ⓘ |
| fossilSite |
Bernissart Belgium
ⓘ
surface form:
Bernissart, Belgium
England ⓘ Germany ⓘ Portugal ⓘ Spain ⓘ |
| geographicDistribution | Europe ⓘ |
| historicalReconstruction |
19th-century kangaroo-like bipedal model
ⓘ
Victorian-era quadrupedal rhinoceros-like model ⓘ |
| kingdom | Animalia ⓘ |
| livedDuring |
Aptian
ⓘ
Barremian ⓘ |
| locomotion |
bipedal
ⓘ
quadrupedal ⓘ |
| modernInterpretation | facultative biped with horizontal body posture ⓘ |
| namedAfter | iguana ⓘ |
| namedBy | Gideon Mantell ⓘ |
| nameMeaning | iguana tooth ⓘ |
| notableFor |
being one of the first dinosaurs scientifically described
ⓘ
being one of the original three dinosaurs used to define Dinosauria ⓘ |
| order | Ornithischia ⓘ |
| phylum | Chordata ⓘ |
| posture | facultative biped ⓘ |
| reproduction | oviparous ⓘ |
| socialBehavior |
likely gregarious
ⓘ
possible herding behavior ⓘ |
| suborder | Ornithopoda ⓘ |
| tailFeature | stiffened tail ⓘ |
| taxonRank | genus ⓘ |
| temporalRange | Early Cretaceous ⓘ |
| thumbSpikeFunction |
defense
ⓘ
intraspecific combat (hypothesized) ⓘ predator deterrence (hypothesized) ⓘ |
| trophicLevel | primary consumer ⓘ |
| typeSpecies |
Iguanodon
self-linksurface differs
ⓘ
surface form:
Iguanodon bernissartensis
|
| yearDescribed | 1825 ⓘ |
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.
Instruction
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.
Input
Subject: Iguanodon Description of subject: Iguanodon was a large, herbivorous ornithopod dinosaur from the Early Cretaceous, best known for its beak-like mouth and distinctive thumb spikes likely used for defense.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Iguanodon bernissartensis