Ischigualasto Formation
E893292
The Ischigualasto Formation is a Late Triassic geological formation in northwestern Argentina renowned for its exceptionally well-preserved early dinosaur and vertebrate fossils.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Ischigualasto Formation canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T10896278 — 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: Ischigualasto Formation Context triple: [Ischigualasto Provincial Park, contains, Ischigualasto Formation]
-
A.
Djadokhta Formation
The Djadokhta Formation is a Late Cretaceous sedimentary rock unit in Mongolia renowned for its exceptionally well-preserved dinosaur fossils, including iconic theropods and other desert-adapted fauna.
-
B.
Areyonga Formation
The Areyonga Formation is a geological rock unit within central Australia's Amadeus Basin, known for its sedimentary sequences that record Proterozoic environmental and tectonic history.
-
C.
Kaiparowits Formation
The Kaiparowits Formation is a Late Cretaceous rock unit in southern Utah renowned for its exceptionally rich and diverse dinosaur and vertebrate fossil assemblages.
-
D.
Los Rastros Formation
Los Rastros Formation is a Late Triassic geological formation in northwestern Argentina known for its fossil-rich sedimentary rocks that record ancient lake and river environments.
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E.
Etchegoin Formation
The Etchegoin Formation is a geologic unit in California’s San Joaquin Basin known for its significant petroleum reservoirs, particularly in major fields such as the Belridge Oil Field.
- 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: Ischigualasto Formation Target entity description: The Ischigualasto Formation is a Late Triassic geological formation in northwestern Argentina renowned for its exceptionally well-preserved early dinosaur and vertebrate fossils.
-
A.
Djadokhta Formation
The Djadokhta Formation is a Late Cretaceous sedimentary rock unit in Mongolia renowned for its exceptionally well-preserved dinosaur fossils, including iconic theropods and other desert-adapted fauna.
-
B.
Areyonga Formation
The Areyonga Formation is a geological rock unit within central Australia's Amadeus Basin, known for its sedimentary sequences that record Proterozoic environmental and tectonic history.
-
C.
Kaiparowits Formation
The Kaiparowits Formation is a Late Cretaceous rock unit in southern Utah renowned for its exceptionally rich and diverse dinosaur and vertebrate fossil assemblages.
-
D.
Los Rastros Formation
Los Rastros Formation is a Late Triassic geological formation in northwestern Argentina known for its fossil-rich sedimentary rocks that record ancient lake and river environments.
-
E.
Etchegoin Formation
The Etchegoin Formation is a geologic unit in California’s San Joaquin Basin known for its significant petroleum reservoirs, particularly in major fields such as the Belridge Oil Field.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
fossil-bearing stratigraphic unit
ⓘ
geological formation ⓘ |
| age | Carnian NERFINISHED ⓘ |
| associatedWith | Ischigualasto Provincial Park NERFINISHED ⓘ |
| chronostratigraphicSignificance |
key reference for Late Triassic terrestrial faunas
ⓘ
records early diversification of dinosaurs ⓘ |
| containsFossilsOf |
Chromogisaurus
NERFINISHED
ⓘ
Eoraptor NERFINISHED ⓘ Exaeretodon NERFINISHED ⓘ Herrerasaurus NERFINISHED ⓘ Hyperodapedon NERFINISHED ⓘ Panphagia NERFINISHED ⓘ Proterochampsia NERFINISHED ⓘ Sanjuansaurus NERFINISHED ⓘ aetosaurians ⓘ cynodonts ⓘ dicynodonts ⓘ early dinosaurs ⓘ early mammal relatives ⓘ non-dinosaurian archosaurs ⓘ phytosaurs ⓘ rhynchosaurs ⓘ synapsids ⓘ temnospondyls ⓘ |
| country | Argentina ⓘ |
| discoveredBy | Argentine geologists ⓘ |
| environmentOfDeposition |
fluvial
ⓘ
volcanically influenced floodplain ⓘ |
| geologicalPeriod | Late Triassic ⓘ |
| hasColor | variegated red beds ⓘ |
| hasThickness | hundreds of meters ⓘ |
| locatedIn |
San Juan Province
NERFINISHED
ⓘ
northwestern Argentina ⓘ |
| namedAfter | Ischigualasto region NERFINISHED ⓘ |
| notableFor | one of the oldest known dinosaur assemblages ⓘ |
| otherLithology |
conglomerate
ⓘ
volcaniclastic rock ⓘ |
| overlies | Los Rastros Formation NERFINISHED ⓘ |
| partOf | Ischigualasto-Villa Unión Basin NERFINISHED ⓘ |
| preservationQuality | exceptional ⓘ |
| primaryLithology |
mudstone
ⓘ
sandstone ⓘ |
| stratigraphicUnitOf | Ischigualasto Provincial Park NERFINISHED ⓘ |
| tectonicSetting | rift basin ⓘ |
| timeSpan | approximately 231–225 million years ago ⓘ |
| underlies | Los Colorados Formation NERFINISHED ⓘ |
| worldFameFor |
early dinosaur fossils
ⓘ
exceptionally well-preserved vertebrate fossils ⓘ |
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: Ischigualasto Formation Description of subject: The Ischigualasto Formation is a Late Triassic geological formation in northwestern Argentina renowned for its exceptionally well-preserved early dinosaur and vertebrate fossils.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.