Carboniferous period
E45902
The Carboniferous period was a Paleozoic era interval, roughly 359 to 299 million years ago, characterized by extensive swampy forests that formed vast coal deposits and by the diversification of early amphibians and insects.
All labels observed (11)
| Label | Occurrences |
|---|---|
| Carboniferous | 11 |
| Carboniferous Period | 10 |
| Carboniferous period canonical | 7 |
| Late Carboniferous | 2 |
| Pennsylvanian | 2 |
| Carboniferous system | 1 |
| Lower Carboniferous (Mississippian) | 1 |
| Pennsylvanian Subperiod | 1 |
| Pennsylvanian period | 1 |
| Pennsylvanian subperiod | 1 |
| Upper Carboniferous (Pennsylvanian) | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T359339 — 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: Carboniferous period Context triple: [Indiana limestone, geologicalAge, Carboniferous period]
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A.
Silurian
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.
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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.
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C.
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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D.
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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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: Carboniferous period Target entity description: The Carboniferous period was a Paleozoic era interval, roughly 359 to 299 million years ago, characterized by extensive swampy forests that formed vast coal deposits and by the diversification of early amphibians and insects.
-
A.
Silurian
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.
-
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.
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.
-
D.
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.
-
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 (50)
| Predicate | Object |
|---|---|
| instanceOf |
Paleozoic period
ⓘ
geological period ⓘ |
| alsoKnownAs |
Carboniferous period
ⓘ
surface form:
Lower Carboniferous (Mississippian)
Mississippian and Pennsylvanian in North America ⓘ Carboniferous period ⓘ
surface form:
Upper Carboniferous (Pennsylvanian)
|
| atmosphericOxygenLevel |
higher than present
ⓘ
up to about 30–35 percent ⓘ |
| biologicalEvent |
development of extensive peat-forming ecosystems
ⓘ
diversification of winged insects ⓘ origin of amniotes ⓘ radiation of amphibians ⓘ |
| climate |
generally warm and humid
ⓘ
subject to glaciations in Gondwana ⓘ |
| continentConfiguration |
Laurasia in northern hemisphere
ⓘ
large supercontinent Gondwana in southern hemisphere ⓘ |
| dominantFauna |
diverse insects
ⓘ
early amphibians ⓘ early reptiles ⓘ giant millipedes ⓘ large dragonfly-like insects ⓘ |
| dominantFlora |
early gymnosperms
ⓘ
ferns ⓘ lycopsids ⓘ seed ferns ⓘ sphenopsids ⓘ |
| duration | about 60 million years ⓘ |
| endTime | about 299 million years ago ⓘ |
| follows |
Devonian Period
ⓘ
surface form:
Devonian period
|
| importantFor | industrial coal resources ⓘ |
| knownFor |
diversification of early amphibians
ⓘ
diversification of insects ⓘ extensive coal formation ⓘ high atmospheric oxygen levels ⓘ large arthropods ⓘ swampy forests ⓘ |
| majorEnvironment |
coal-forming tropical wetlands
ⓘ
extensive coastal swamps ⓘ lush equatorial forests ⓘ |
| namedAfter | carbon ⓘ |
| partOf |
Paleozoic Era
ⓘ
surface form:
Paleozoic era
|
| precedes |
Permian Period
ⓘ
surface form:
Permian period
|
| recognizedBy | International Commission on Stratigraphy ⓘ |
| resultedIn |
major coal deposits in Asia
ⓘ
major coal deposits in Europe ⓘ major coal deposits in North America ⓘ |
| startTime | about 359 million years ago ⓘ |
| stratigraphicSystem |
Carboniferous period
self-linksurface differs
ⓘ
surface form:
Carboniferous system
|
| subdivision |
Mississippian
ⓘ
Pennsylvanian ⓘ |
| tectonicContext | assembly of Pangaea ⓘ |
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: Carboniferous period Description of subject: The Carboniferous period was a Paleozoic era interval, roughly 359 to 299 million years ago, characterized by extensive swampy forests that formed vast coal deposits and by the diversification of early amphibians and insects.
Referenced by (38)
Full triples — surface form annotated when it differs from this entity's canonical label.