Triassic
E38909
The Triassic was the first period of the Mesozoic Era, marked by the initial diversification of dinosaurs and the recovery of life following the Permian–Triassic mass extinction.
All labels observed (7)
| Label | Occurrences |
|---|---|
| Triassic canonical | 8 |
| Triassic Period | 8 |
| Triassic period | 6 |
| Early Triassic | 3 |
| Triassic System | 2 |
| Early Triassic Epoch | 1 |
| coining the term "Trias" for Triassic | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T299074 — 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: Triassic Context triple: [Jurassic, precededBy, Triassic]
-
A.
Mesozoic Era
The Mesozoic Era was a major geological era, often called the "Age of Reptiles," during which dinosaurs dominated the land and the supercontinent Pangaea broke apart into modern continents.
-
B.
Jurassic Period
The Jurassic Period was a major division of the Mesozoic Era characterized by warm climates, the dominance and diversification of dinosaurs, and the early evolution of birds.
-
C.
Cretaceous
The Cretaceous was the final period of the Mesozoic Era, marked by high sea levels, diverse dinosaurs, and ending with the mass extinction that wiped them out about 66 million years ago.
-
D.
Paleozoic Era
The Paleozoic Era was an ancient geologic time interval, spanning roughly 541 to 252 million years ago, marked by the emergence and diversification of complex life in the seas and on land and the assembly of major continental landmasses.
-
E.
Early Jurassic
The Early Jurassic was the first epoch of the Jurassic Period, marked by the recovery of life after the end-Triassic extinction and the early diversification of dinosaurs and marine reptiles.
- 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: Triassic Target entity description: The Triassic was the first period of the Mesozoic Era, marked by the initial diversification of dinosaurs and the recovery of life following the Permian–Triassic mass extinction.
-
A.
Mesozoic Era
The Mesozoic Era was a major geological era, often called the "Age of Reptiles," during which dinosaurs dominated the land and the supercontinent Pangaea broke apart into modern continents.
-
B.
Jurassic Period
The Jurassic Period was a major division of the Mesozoic Era characterized by warm climates, the dominance and diversification of dinosaurs, and the early evolution of birds.
-
C.
Cretaceous
The Cretaceous was the final period of the Mesozoic Era, marked by high sea levels, diverse dinosaurs, and ending with the mass extinction that wiped them out about 66 million years ago.
-
D.
Paleozoic Era
The Paleozoic Era was an ancient geologic time interval, spanning roughly 541 to 252 million years ago, marked by the emergence and diversification of complex life in the seas and on land and the assembly of major continental landmasses.
-
E.
Early Jurassic
The Early Jurassic was the first epoch of the Jurassic Period, marked by the recovery of life after the end-Triassic extinction and the early diversification of dinosaurs and marine reptiles.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
chronostratigraphic unit
ⓘ
epoch ⓘ epoch ⓘ epoch ⓘ geologic period ⓘ mass extinction ⓘ |
| associatedWith |
World Ocean
ⓘ
surface form:
Panthalassa Ocean
Tethys Ocean ⓘ supercontinent Pangaea ⓘ |
| beginsAfter | Permian–Triassic mass extinction ⓘ |
| characterizedBy |
appearance of first true mammals
ⓘ
diversification of ammonoids ⓘ diversification of marine reptiles ⓘ dominance of conifers ⓘ dominance of synapsid therapsids in early Triassic ⓘ evolution of early lissamphibians ⓘ evolution of early turtles ⓘ evolution of first flying vertebrates pterosaurs ⓘ expansion of gymnosperm forests ⓘ initial diversification of dinosaurs ⓘ low diversity but high abundance of some disaster taxa in Early Triassic ⓘ monsoonal climate patterns on Pangaea margins ⓘ origin of modern-style coral reefs ⓘ presence of ichthyosaurs ⓘ presence of sauropterygians such as plesiosaurs ancestors ⓘ presence of seed ferns ⓘ radiation of archosaurs ⓘ recovery of coral reef ecosystems by Middle to Late Triassic ⓘ recovery of marine ecosystems ⓘ recovery of terrestrial ecosystems ⓘ rise of crocodile-line archosaurs ⓘ widespread arid continental climates ⓘ |
| duration | about 51 million years ⓘ |
| end | approximately 201 million years ago ⓘ |
| endsWith | Triassic–Jurassic extinction event ⓘ |
| follows | Permian ⓘ |
| GSSP |
Kuhjoch section Austria for base of Jurassic and top of Triassic
ⓘ
Meishan section China for base of Triassic ⓘ |
| lowerBoundaryDefinedBy | first appearance of conodont Hindeodus parvus ⓘ |
| nameCoinedIn | 1834 ⓘ |
| namedBy | Friedrich von Alberti ⓘ |
| nameRefersTo | threefold division of Germanic Trias red beds limestones and evaporites ⓘ |
| partOf | Mesozoic Era ⓘ |
| precedes | Jurassic ⓘ |
| recognizedBy | International Commission on Stratigraphy ⓘ |
| start | approximately 252 million years ago ⓘ |
| subdividedInto |
Triassic
self-linksurface differs
ⓘ
surface form:
Early Triassic
Late Triassic ⓘ Middle Triassic ⓘ |
| upperBoundaryDefinedBy | first appearance of ammonite Psiloceras spelae tirolicum ⓘ |
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: Triassic Description of subject: The Triassic was the first period of the Mesozoic Era, marked by the initial diversification of dinosaurs and the recovery of life following the Permian–Triassic mass extinction.
Referenced by (29)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Triassic Period
this entity surface form:
Triassic Period
this entity surface form:
Triassic Period
this entity surface form:
Early Triassic
this entity surface form:
Triassic Period
subject surface form:
Walking with Dinosaurs
this entity surface form:
Triassic period
this entity surface form:
Triassic Period
this entity surface form:
Triassic Period
this entity surface form:
Triassic period
this entity surface form:
Triassic period
Global Boundary Stratotype Section and Point for base of Hettangian
→
definesBoundaryBetween
→
Triassic
ⓘ
this entity surface form:
Triassic System
subject surface form:
Pangaea
this entity surface form:
Triassic period
this entity surface form:
Triassic Period
this entity surface form:
Triassic period
this entity surface form:
Triassic Period
this entity surface form:
coining the term "Trias" for Triassic
this entity surface form:
Triassic period
this entity surface form:
Early Triassic
this entity surface form:
Early Triassic
this entity surface form:
Triassic System
this entity surface form:
Early Triassic Epoch