Alamosaurus
E384984
Alamosaurus is a large, long-necked sauropod dinosaur from Late Cretaceous North America, known as one of the last and largest dinosaurs to have lived there before the mass extinction.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Alamosaurus canonical | 3 |
| Alamosaurus sanjuanensis | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T3524150 — 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: Alamosaurus Context triple: [Titanosauria, notableMemberTaxon, Alamosaurus]
-
A.
Camarasaurus
Camarasaurus was a large, long-necked herbivorous sauropod dinosaur from the Late Jurassic period of North America.
-
B.
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.
-
C.
Brachiosaurus
Brachiosaurus is a large, long-necked sauropod dinosaur famous for its towering height and iconic appearances in popular culture.
-
D.
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.
-
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.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Alamosaurus Target entity description: Alamosaurus is a large, long-necked sauropod dinosaur from Late Cretaceous North America, known as one of the last and largest dinosaurs to have lived there before the mass extinction.
-
A.
Camarasaurus
Camarasaurus was a large, long-necked herbivorous sauropod dinosaur from the Late Jurassic period of North America.
-
B.
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.
-
C.
Brachiosaurus
Brachiosaurus is a large, long-necked sauropod dinosaur famous for its towering height and iconic appearances in popular culture.
-
D.
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.
-
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 (47)
| Predicate | Object |
|---|---|
| instanceOf |
genus of dinosaurs
ⓘ
sauropod ⓘ titanosaur ⓘ |
| bodyPlan |
long-necked
ⓘ
long-tailed ⓘ |
| clade | Titanosauria ⓘ |
| class | Reptilia ⓘ |
| coexistedWith |
Triceratops
ⓘ
Tyrannosaurus ⓘ
surface form:
Tyrannosaurus rex
|
| describedBy | Charles W. Gilmore ⓘ |
| diet | herbivorous ⓘ |
| environment | terrestrial ⓘ |
| estimatedLength | up to about 30 meters ⓘ |
| estimatedMass | over 30 metric tons ⓘ |
| extinctionEvent |
Cretaceous–Paleogene boundary
ⓘ
surface form:
Cretaceous–Paleogene extinction event
|
| family | Saltasauridae ⓘ |
| fossilFoundIn |
New Mexico
ⓘ
Texas ⓘ United States of America ⓘ
surface form:
United States
Utah ⓘ |
| fossilRecord | fragmentary but widespread in the American Southwest ⓘ |
| fossilTypeMaterial |
limb bones
ⓘ
partial skeleton ⓘ vertebrae ⓘ |
| geologicalAge | approximately 70–66 million years ago ⓘ |
| infraorder | Sauropoda ⓘ |
| kingdom | Animalia ⓘ |
| livedBefore | Cenozoic mammals of North America ⓘ |
| livedIn | North America ⓘ |
| locomotion | quadrupedal ⓘ |
| namedAfter | Ojo Alamo Formation ⓘ |
| neckFunction | high browsing on vegetation ⓘ |
| notableFor |
being one of the largest known North American dinosaurs
ⓘ
being one of the last non-avian dinosaurs in North America ⓘ |
| order | Saurischia ⓘ |
| phylum | Chordata ⓘ |
| region |
Western North America
ⓘ
surface form:
western North America
|
| reproduction | oviparous ⓘ |
| sizeClass | giant sauropod ⓘ |
| suborder | Sauropodomorpha ⓘ |
| superorder | Dinosauria ⓘ |
| tailFunction | counterbalance for neck and body ⓘ |
| taxonRank | genus ⓘ |
| temporalRange |
Late Cretaceous
ⓘ
Maastrichtian ⓘ |
| typeSpecies |
Alamosaurus
self-linksurface differs
ⓘ
surface form:
Alamosaurus sanjuanensis
|
| yearDescribed | 1922 ⓘ |
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: Alamosaurus Description of subject: Alamosaurus is a large, long-necked sauropod dinosaur from Late Cretaceous North America, known as one of the last and largest dinosaurs to have lived there before the mass extinction.
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Alamosaurus sanjuanensis