Marshosaurus
E936804
Marshosaurus is a medium-sized theropod dinosaur from the Late Jurassic of North America, known primarily from fragmentary remains found in the Morrison Formation.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Marshosaurus canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11516983 — 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: Marshosaurus Context triple: [Cleveland-Lloyd Dinosaur Quarry, notableTaxon, Marshosaurus]
-
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.
Futalognkosaurus
Futalognkosaurus is a gigantic Late Cretaceous titanosaurian sauropod dinosaur from Patagonia, known from exceptionally complete fossil remains that make it one of the best-understood giant dinosaurs.
-
C.
Rapetosaurus
Rapetosaurus is a large herbivorous sauropod dinosaur from Late Cretaceous Madagascar, known for its long neck, massive body, and status as one of the better-preserved titanosaurs.
-
D.
Hylaeosaurus
Hylaeosaurus is an early armored dinosaur from the Early Cretaceous of England, notable as one of the first dinosaurs ever described scientifically and recognized for its heavy body armor and spines.
-
E.
Dreadnoughtus schrani
Dreadnoughtus schrani is a gigantic titanosaurian sauropod dinosaur from Late Cretaceous Patagonia, notable for being one of the most completely known of the largest land animals that ever lived.
- 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: Marshosaurus Target entity description: Marshosaurus is a medium-sized theropod dinosaur from the Late Jurassic of North America, known primarily from fragmentary remains found in the Morrison Formation.
-
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.
Futalognkosaurus
Futalognkosaurus is a gigantic Late Cretaceous titanosaurian sauropod dinosaur from Patagonia, known from exceptionally complete fossil remains that make it one of the best-understood giant dinosaurs.
-
C.
Rapetosaurus
Rapetosaurus is a large herbivorous sauropod dinosaur from Late Cretaceous Madagascar, known for its long neck, massive body, and status as one of the better-preserved titanosaurs.
-
D.
Hylaeosaurus
Hylaeosaurus is an early armored dinosaur from the Early Cretaceous of England, notable as one of the first dinosaurs ever described scientifically and recognized for its heavy body armor and spines.
-
E.
Dreadnoughtus schrani
Dreadnoughtus schrani is a gigantic titanosaurian sauropod dinosaur from Late Cretaceous Patagonia, notable for being one of the most completely known of the largest land animals that ever lived.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
dinosaur species
ⓘ
fossil taxon ⓘ prehistoric reptile ⓘ theropod dinosaur ⓘ |
| age | Kimmeridgian ⓘ |
| bodySize | medium-sized ⓘ |
| clade |
Dinosauria
ⓘ
Megalosauroidea NERFINISHED ⓘ Tetanurae NERFINISHED ⓘ |
| coexistedWith |
Allosaurus
NERFINISHED
ⓘ
Apatosaurus NERFINISHED ⓘ Stegosaurus NERFINISHED ⓘ |
| continent | North America ⓘ |
| diet | carnivorous ⓘ |
| ecologicalRole | predator ⓘ |
| estimatedLength | 4–6 meters ⓘ |
| estimatedMass | 200–300 kilograms ⓘ |
| etymologyLanguage | Greek ⓘ |
| extinctionStatus | extinct ⓘ |
| family | Megalosauridae NERFINISHED ⓘ |
| formationMember | Brushy Basin Member NERFINISHED ⓘ |
| fossilMaterial |
limb bones
ⓘ
pelvic bones ⓘ skull fragments ⓘ vertebrae ⓘ |
| fossilPreservation | partial skeletons ⓘ |
| fossilRange | Upper Jurassic ⓘ |
| fossilSite |
Colorado
NERFINISHED
ⓘ
Utah NERFINISHED ⓘ |
| geologicalFormation | Morrison Formation NERFINISHED ⓘ |
| habitat | floodplain environments ⓘ |
| holotypeRepository | Utah Museum of Natural History NERFINISHED ⓘ |
| kingdom | Animalia ⓘ |
| knownFrom | fragmentary remains ⓘ |
| locomotion | bipedal ⓘ |
| namedAfter | Othniel Charles Marsh NERFINISHED ⓘ |
| namedBy | James H. Madsen Jr. NERFINISHED ⓘ |
| nameMeaning | "Marsh’s lizard" ⓘ |
| order | Theropoda NERFINISHED ⓘ |
| paleoenvironment | semi-arid climate with seasonal rainfall ⓘ |
| phylum | Chordata ⓘ |
| reproduction | oviparous ⓘ |
| subfamily | Piatnitzkysaurinae NERFINISHED ⓘ |
| taxonRank |
genus
ⓘ
species ⓘ |
| temporalRange | Late Jurassic ⓘ |
| typeSpecies | Marshosaurus bicentesimus NERFINISHED ⓘ |
| yearDescribed | 1976 ⓘ |
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: Marshosaurus Description of subject: Marshosaurus is a medium-sized theropod dinosaur from the Late Jurassic of North America, known primarily from fragmentary remains found in the Morrison Formation.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.