Early Jurassic
E38609
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.
All labels observed (4)
| Label | Occurrences |
|---|---|
| Early Jurassic canonical | 10 |
| Lower Jurassic Series | 3 |
| Lower Jurassic series | 2 |
| Early Jurassic epoch | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T299080 — 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: Early Jurassic Context triple: [Jurassic, subdividedInto, Early Jurassic]
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A.
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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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.
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.
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D.
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.
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E.
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.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Early Jurassic Target entity description: 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.
-
A.
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.
-
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.
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.
-
D.
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.
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E.
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.
- F. None of above. chosen
Statements (50)
| Predicate | Object |
|---|---|
| instanceOf |
geologic epoch
ⓘ
subdivision of the Jurassic Period ⓘ |
| associatedWith |
initial breakup of Pangaea
ⓘ
intense volcanic activity in large igneous provinces ⓘ opening of the Central Atlantic Ocean ⓘ |
| beganAfter | end-Triassic mass extinction ⓘ |
| carbonDioxideLevel | higher than present atmospheric level ⓘ |
| characterizedBy |
diversification of marine reptiles
ⓘ
dominance of gymnosperm floras ⓘ early diversification of dinosaurs ⓘ expansion of ammonites ⓘ high sea levels ⓘ radiation of bivalves ⓘ recovery of marine ecosystems ⓘ recovery of terrestrial ecosystems ⓘ warm greenhouse climate ⓘ widespread shallow epicontinental seas ⓘ |
| climate | generally warm and humid ⓘ |
| contains |
Hettangian
ⓘ
Pliensbachian ⓘ Sinemurian ⓘ Toarcian ⓘ |
| duration | about 27 million years ⓘ |
| endTime | approximately 174.1 million years ago ⓘ |
| firstStage | Hettangian ⓘ |
| floraIncludes |
conifers
ⓘ
cycads ⓘ ginkgophytes ⓘ seed ferns ⓘ |
| follows |
Late Triassic
ⓘ
Rhaetian Age ⓘ |
| includesEvent | Toarcian Oceanic Anoxic Event ⓘ |
| lastStage | Toarcian ⓘ |
| marineFaunaIncludes |
ammonites
ⓘ
belemnites ⓘ brachiopods ⓘ ichthyosaurs ⓘ plesiosaurs ⓘ |
| oxygenLevel | near or slightly below present atmospheric level ⓘ |
| partOf | Jurassic Period ⓘ |
| precedes | Middle Jurassic ⓘ |
| recognizedBy | International Commission on Stratigraphy ⓘ |
| startTime | approximately 201.3 million years ago ⓘ |
| stratotypeDefinedBy | Global Boundary Stratotype Section and Point for base of Hettangian ⓘ |
| terrestrialFaunaIncludes |
early mammals
ⓘ
early sauropod dinosaurs ⓘ ornithischian dinosaurs ⓘ pterosaurs ⓘ theropod dinosaurs ⓘ |
| 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: Early Jurassic Description of subject: 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.
Referenced by (16)
Full triples — surface form annotated when it differs from this entity's canonical label.