Juramaia
E193068
Juramaia is an early mammal from the Late Jurassic period that represents one of the oldest known members of the eutherian (placental mammal) lineage.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Juramaia canonical | 2 |
| Juramaia sinensis | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1742327 — 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: Juramaia Context triple: [Eutheria, earliestFossils, Juramaia]
-
A.
Palorchestes
Palorchestes is an extinct genus of large, herbivorous Australian marsupials, often called "marsupial tapirs" for their tapir-like snouts and robust bodies.
-
B.
Saurophaganax maximus
Saurophaganax maximus is a large Late Jurassic theropod dinosaur, closely related to Allosaurus, known from fossil remains found in what is now Oklahoma.
-
C.
Máximo the Titanosaur
Máximo the Titanosaur is a mounted cast of a giant Patagotitan mayorum dinosaur, notable as one of the largest dinosaur displays in the world and a centerpiece attraction at Chicago’s Field Museum.
-
D.
dodo (extinct)
The dodo was a large, flightless bird endemic to Mauritius that became a symbol of human-driven extinction after disappearing in the 17th century.
-
E.
Patagotitan mayorum
Patagotitan mayorum is a gigantic titanosaurian sauropod dinosaur from Late Cretaceous Patagonia, considered among the largest land animals known from the fossil record.
- 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: Juramaia Target entity description: Juramaia is an early mammal from the Late Jurassic period that represents one of the oldest known members of the eutherian (placental mammal) lineage.
-
A.
Palorchestes
Palorchestes is an extinct genus of large, herbivorous Australian marsupials, often called "marsupial tapirs" for their tapir-like snouts and robust bodies.
-
B.
Saurophaganax maximus
Saurophaganax maximus is a large Late Jurassic theropod dinosaur, closely related to Allosaurus, known from fossil remains found in what is now Oklahoma.
-
C.
Máximo the Titanosaur
Máximo the Titanosaur is a mounted cast of a giant Patagotitan mayorum dinosaur, notable as one of the largest dinosaur displays in the world and a centerpiece attraction at Chicago’s Field Museum.
-
D.
dodo (extinct)
The dodo was a large, flightless bird endemic to Mauritius that became a symbol of human-driven extinction after disappearing in the 17th century.
-
E.
Patagotitan mayorum
Patagotitan mayorum is a gigantic titanosaurian sauropod dinosaur from Late Cretaceous Patagonia, considered among the largest land animals known from the fossil record.
- F. None of above. chosen
Statements (41)
| Predicate | Object |
|---|---|
| instanceOf |
early mammal
ⓘ
eutherian mammal ⓘ extinct genus ⓘ fossil taxon ⓘ species ⓘ |
| bodySize | small ⓘ |
| clade |
Eutheria
ⓘ
Theria ⓘ |
| class | Mammalia ⓘ |
| coexistedWith |
early feathered dinosaurs
ⓘ
other small Jurassic mammals ⓘ |
| countryOfFossilDiscovery | China ⓘ |
| describedAs | stem eutherian ⓘ |
| diet | insectivorous ⓘ |
| distinguishedFrom |
metatherians
ⓘ
monotremes ⓘ |
| earliestKnownEutherian | true ⓘ |
| ecologicalNiche | small arboreal or scansorial insectivore ⓘ |
| formation | Tiaojishan Formation ⓘ |
| fossilAgeApproximation | about 160 million years ago ⓘ |
| fossilPreservation | partial skeleton with skull ⓘ |
| fossilRecordStatus | known from a single well-preserved specimen ⓘ |
| fossilSite |
Liaoning Province, China
ⓘ
linked to:
Liaoning
|
| geologicalStage | Oxfordian ⓘ |
| hasCharacteristic |
advanced dental features typical of eutherians
ⓘ
forelimb adaptations suggesting climbing ability ⓘ |
| helpsCalibrate | molecular clock for placental mammal evolution ⓘ |
| importanceInPaleontology | provides evidence that eutherian-metatherian split occurred by the Late Jurassic ⓘ |
| kingdom | Animalia ⓘ |
| locomotion | scansorial ⓘ |
| notableFor | being one of the oldest known members of the eutherian lineage ⓘ |
| paleoenvironment | forested ecosystem ⓘ |
| parentTaxon | Juramaia ⓘ |
| phylum | Chordata ⓘ |
| reproductiveMode | placental-lineage mammal ⓘ |
| shows | early diversification of mammalian lineages in the Jurassic ⓘ |
| significanceInEvolution | clarifies early divergence of eutherians from other therians ⓘ |
| taxonRank | genus ⓘ |
| temporalRange |
Jurassic period
ⓘ
linked to:
Jurassic Period
Late Jurassic ⓘ |
| typeSpecies |
Juramaia sinensis
ⓘ
linked to:
Juramaia
|
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: Juramaia Description of subject: Juramaia is an early mammal from the Late Jurassic period that represents one of the oldest known members of the eutherian (placental mammal) lineage.
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.