Lystrosaurus
E514451
Lystrosaurus was a small, tusked, herbivorous therapsid (mammal-like reptile) that thrived in the Early Triassic and is notable for its widespread distribution and survival after the Permian–Triassic mass extinction.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Lystrosaurus canonical | 4 |
| Lystrosauridae | 1 |
| Lystrosaurus murrayi | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T5354490 — 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: Lystrosaurus Context triple: [Gondwana, containsFossilFauna, Lystrosaurus]
-
A.
Poebrotherium
Poebrotherium is an extinct early camelid genus from the Eocene and Oligocene of North America, known for its small, deer-like body and significance in camel evolution.
-
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.
Palorchestes
Palorchestes is an extinct genus of large, herbivorous Australian marsupials, often called "marsupial tapirs" for their tapir-like snouts and robust bodies.
-
D.
Diprotodon
Diprotodon was a giant prehistoric marsupial, the largest known marsupial to have ever lived, that roamed Australia during the Pleistocene epoch.
-
E.
Othnielosaurus
Othnielosaurus is a small, bipedal ornithischian dinosaur from the Late Jurassic of North America, known for its lightly built body and herbivorous diet.
- 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: Lystrosaurus Target entity description: Lystrosaurus was a small, tusked, herbivorous therapsid (mammal-like reptile) that thrived in the Early Triassic and is notable for its widespread distribution and survival after the Permian–Triassic mass extinction.
-
A.
Poebrotherium
Poebrotherium is an extinct early camelid genus from the Eocene and Oligocene of North America, known for its small, deer-like body and significance in camel evolution.
-
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.
Palorchestes
Palorchestes is an extinct genus of large, herbivorous Australian marsupials, often called "marsupial tapirs" for their tapir-like snouts and robust bodies.
-
D.
Diprotodon
Diprotodon was a giant prehistoric marsupial, the largest known marsupial to have ever lived, that roamed Australia during the Pleistocene epoch.
-
E.
Othnielosaurus
Othnielosaurus is a small, bipedal ornithischian dinosaur from the Late Jurassic of North America, known for its lightly built body and herbivorous diet.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
dicynodont
ⓘ
genus ⓘ synapsid ⓘ therapsid ⓘ |
| bodySize | small to medium-sized ⓘ |
| clade | Dicynodontia ⓘ |
| class | Synapsida ⓘ |
| diet | herbivorous ⓘ |
| ecologicalRole | dominant Early Triassic herbivore in many terrestrial ecosystems ⓘ |
| estimatedLength | 0.6–1.0 metres ⓘ |
| extinctionStatus | extinct ⓘ |
| family |
Lystrosauridae
ⓘ
linked to:
Lystrosaurus
|
| firstDescribedBy | Richard Owen ⓘ |
| firstDescribedInYear | 1870 ⓘ |
| fossilsFoundIn |
Antarctica
ⓘ
China ⓘ India ⓘ Madagascar ⓘ Russia ⓘ South Africa ⓘ |
| geographicDistribution | Gondwana ⓘ |
| hasCharacteristic |
barrel-shaped body
ⓘ
beaked ⓘ robust forelimbs ⓘ short-snouted ⓘ tusked ⓘ |
| kingdom | Animalia ⓘ |
| likelyLifestyle |
burrowing or semi-fossorial
ⓘ
terrestrial ⓘ |
| livedDuring |
Permian period
ⓘ
linked to:
Permian Period
Triassic period ⓘ |
| locomotion | quadrupedal ⓘ |
| nameMeaning | shovel lizard ⓘ |
| notableFor |
survival across the Permian–Triassic mass extinction
ⓘ
widespread distribution in the Early Triassic ⓘ |
| order |
Therapsida
ⓘ
linked to:
therapsids
|
| phylum | Chordata ⓘ |
| reproduction | oviparous (egg-laying, inferred for non-mammalian synapsids) ⓘ |
| respiratoryAdaptation | suggested to have relatively efficient lungs compared to many contemporaries ⓘ |
| skullFeature |
pair of tusks in upper jaw
ⓘ
toothless beak for cropping vegetation ⓘ |
| suborder |
Anomodontia
ⓘ
linked to:
Synapsida
|
| taxonRank | genus ⓘ |
| temporalRange |
Early Triassic
ⓘ
Late Permian ⓘ |
| trophicGuild | herbivore ⓘ |
| typeSpecies |
Lystrosaurus murrayi
ⓘ
linked to:
Lystrosaurus
|
| usedAs | biostratigraphic index fossil for Early Triassic ⓘ |
| usedAsEvidenceFor |
continental connections within Gondwana
ⓘ
post-extinction ecological recovery ⓘ |
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: Lystrosaurus Description of subject: Lystrosaurus was a small, tusked, herbivorous therapsid (mammal-like reptile) that thrived in the Early Triassic and is notable for its widespread distribution and survival after the Permian–Triassic mass extinction.
Referenced by (6)
Full triples — surface form annotated when it differs from this entity's canonical label.