Silurian
E43370
The Silurian is a geologic period of the Paleozoic Era, roughly 443 to 419 million years ago, marked by the stabilization of Earth’s climate, widespread shallow seas, and significant diversification of early marine life and the first land plants.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Silurian Period | 14 |
| Silurian canonical | 10 |
| Silurian period | 8 |
| Silurian System | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T342528 — 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.
Target entity: Silurian Context triple: [Southern Uplands Fault, geologicalPeriodOfMajorActivity, Silurian]
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A.
Triassic
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.
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B.
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.
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C.
Early Devonian
The Early Devonian was the initial subdivision of the Devonian Period, marked by the diversification of early fishes and the spread of primitive vascular land plants across emerging terrestrial ecosystems.
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D.
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.
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E.
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.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Silurian Target entity description: The Silurian is a geologic period of the Paleozoic Era, roughly 443 to 419 million years ago, marked by the stabilization of Earth’s climate, widespread shallow seas, and significant diversification of early marine life and the first land plants.
-
A.
Triassic
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.
-
B.
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.
-
C.
Early Devonian
The Early Devonian was the initial subdivision of the Devonian Period, marked by the diversification of early fishes and the spread of primitive vascular land plants across emerging terrestrial ecosystems.
-
D.
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.
-
E.
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.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
geologic period
ⓘ
period of the Paleozoic Era ⓘ |
| atmosphere | rising atmospheric oxygen levels ⓘ |
| boundaryDefinition | defined by Global Boundary Stratotype Sections and Points (GSSPs) ⓘ |
| characterizedBy |
diversification of marine life
ⓘ
first well-established land plants ⓘ high sea levels ⓘ reef expansion ⓘ stabilization of Earth’s climate ⓘ warm greenhouse climate ⓘ widespread shallow epicontinental seas ⓘ |
| chronostratigraphicUnit |
Silurian
self-linksurface differs
ⓘ
surface form:
Silurian System
|
| climate |
post-glacial warming after Ordovician glaciation
ⓘ
relatively stable global temperatures ⓘ |
| continentConfiguration |
Baltica moving toward Laurentia
ⓘ
Gondwana dominant in Southern Hemisphere ⓘ Laurentia near equator ⓘ |
| duration | about 24 million years ⓘ |
| endTime | about 419 million years ago ⓘ |
| flora |
earliest vascular plants
ⓘ
simple land plant communities ⓘ |
| follows | Ordovician ⓘ |
| geochronologicUnit |
Silurian
self-linksurface differs
ⓘ
surface form:
Silurian Period
|
| marineLife |
coral-stromatoporoid reefs
ⓘ
diverse brachiopods ⓘ early jawed fishes ⓘ eurypterids ⓘ jawless fishes ⓘ |
| namedAfter |
Celtic tribes
ⓘ
surface form:
Silures
ancient Welsh tribe Silures ⓘ |
| namedBy | Roderick Murchison ⓘ |
| namedInYear | 1835 ⓘ |
| paleogeography | extensive shallow continental shelves ⓘ |
| paleontology |
early terrestrial ecosystems
ⓘ
important fossil reef systems ⓘ |
| partOf | Paleozoic Era ⓘ |
| precedes | Devonian ⓘ |
| startBoundaryEvent | end-Ordovician mass extinction ⓘ |
| startTime | about 443 million years ago ⓘ |
| stratigraphicRank | system ⓘ |
| subdivision |
Llandovery
ⓘ
Ludlow ⓘ Pridoli Epoch ⓘ
surface form:
Pridoli
Wenlock ⓘ |
| tectonicActivity | Caledonian orogeny ⓘ |
| usedIn | geologic time scale ⓘ |
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.
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.
Subject: Silurian Description of subject: The Silurian is a geologic period of the Paleozoic Era, roughly 443 to 419 million years ago, marked by the stabilization of Earth’s climate, widespread shallow seas, and significant diversification of early marine life and the first land plants.
Referenced by (34)
Full triples — surface form annotated when it differs from this entity's canonical label.