Neoproterozoic Oxygenation Event
E779328
The Neoproterozoic Oxygenation Event was a major rise in Earth’s atmospheric and oceanic oxygen levels during the Neoproterozoic Era, linked to profound climatic shifts and the emergence of complex multicellular life.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Neoproterozoic Oxygenation Event canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T9128447 — 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: Neoproterozoic Oxygenation Event Context triple: [Great Oxidation Event, followedBy, Neoproterozoic Oxygenation Event]
-
A.
Great Oxidation Event
The Great Oxidation Event was a pivotal period in Earth’s early history when atmospheric oxygen levels rose dramatically due to photosynthetic microorganisms, fundamentally transforming the planet’s environment and biosphere.
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B.
Great Ordovician Biodiversification Event
The Great Ordovician Biodiversification Event was a profound evolutionary radiation during the Ordovician Period that saw a dramatic increase in marine biodiversity and the establishment of many major animal groups in Paleozoic oceans.
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C.
Neoproterozoic supercontinent cycle
The Neoproterozoic supercontinent cycle refers to the sequence of assembly and breakup of supercontinents during the Neoproterozoic Era, including the formation and fragmentation of Rodinia and the tectonic, climatic, and biological changes associated with these events.
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D.
Cambrian explosion
The Cambrian explosion was a relatively brief period around 541 million years ago when most major animal groups rapidly appeared in the fossil record, dramatically increasing the complexity and diversity of life on Earth.
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E.
Late Ordovician mass extinction
The Late Ordovician mass extinction was one of Earth’s largest biodiversity crises, during which severe climate change and glaciation led to the rapid loss of a substantial portion of marine species.
- 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: Neoproterozoic Oxygenation Event Target entity description: The Neoproterozoic Oxygenation Event was a major rise in Earth’s atmospheric and oceanic oxygen levels during the Neoproterozoic Era, linked to profound climatic shifts and the emergence of complex multicellular life.
-
A.
Great Oxidation Event
The Great Oxidation Event was a pivotal period in Earth’s early history when atmospheric oxygen levels rose dramatically due to photosynthetic microorganisms, fundamentally transforming the planet’s environment and biosphere.
-
B.
Great Ordovician Biodiversification Event
The Great Ordovician Biodiversification Event was a profound evolutionary radiation during the Ordovician Period that saw a dramatic increase in marine biodiversity and the establishment of many major animal groups in Paleozoic oceans.
-
C.
Neoproterozoic supercontinent cycle
The Neoproterozoic supercontinent cycle refers to the sequence of assembly and breakup of supercontinents during the Neoproterozoic Era, including the formation and fragmentation of Rodinia and the tectonic, climatic, and biological changes associated with these events.
-
D.
Cambrian explosion
The Cambrian explosion was a relatively brief period around 541 million years ago when most major animal groups rapidly appeared in the fossil record, dramatically increasing the complexity and diversity of life on Earth.
-
E.
Late Ordovician mass extinction
The Late Ordovician mass extinction was one of Earth’s largest biodiversity crises, during which severe climate change and glaciation led to the rapid loss of a substantial portion of marine species.
- F. None of above. chosen
Statements (49)
| Predicate | Object |
|---|---|
| instanceOf |
geological event
ⓘ
oxygenation event ⓘ paleoclimatic event ⓘ |
| affects |
Earth atmosphere
ⓘ
Earth oceans ⓘ |
| alsoKnownAs |
NOE
NERFINISHED
ⓘ
Neoproterozoic Oxygenation NERFINISHED ⓘ |
| associatedWith |
Ediacaran biota
NERFINISHED
ⓘ
changes in iron cycle ⓘ changes in sulfur cycle ⓘ global-scale glaciations ⓘ increase in ecosystem complexity ⓘ post-glacial greenhouse conditions ⓘ profound climatic shifts ⓘ rise of metazoans ⓘ |
| enables |
emergence of complex multicellular life
ⓘ
evolution of animals ⓘ evolution of large eukaryotes ⓘ |
| evidencedBy |
carbon isotope excursions
ⓘ
chromium isotope signatures ⓘ fossil record of early animals ⓘ iron speciation data ⓘ molybdenum concentrations in shales ⓘ sulfur isotope records ⓘ trace metal enrichments ⓘ |
| hasCause |
biological oxygen production by photosynthesis
ⓘ
burial of organic carbon ⓘ changes in nutrient cycling ⓘ evolution of marine photosynthetic microorganisms ⓘ increased weathering of continental crust ⓘ tectonic reorganization ⓘ |
| hasEffect |
expansion of oxic surface oceans
ⓘ
increased redox stratification of oceans ⓘ oxygenation of deep oceans ⓘ rise in atmospheric oxygen levels ⓘ rise in oceanic oxygen levels ⓘ |
| hasStartTime | Neoproterozoic NERFINISHED ⓘ |
| hasUncertainEndTime | approximately between 560 and 540 million years ago ⓘ |
| hasUncertainStartTime | approximately between 800 and 750 million years ago ⓘ |
| linkedTo |
Gaskiers glaciation
NERFINISHED
ⓘ
Marinoan glaciation NERFINISHED ⓘ Snowball Earth glaciations NERFINISHED ⓘ Sturtian glaciation NERFINISHED ⓘ |
| occursDuring |
Cryogenian Period
NERFINISHED
ⓘ
Ediacaran Period NERFINISHED ⓘ Tonian Period NERFINISHED ⓘ |
| partOf | Neoproterozoic Era NERFINISHED ⓘ |
| temporalRelation |
after Great Oxidation Event
ⓘ
before Phanerozoic oxygenation ⓘ |
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: Neoproterozoic Oxygenation Event Description of subject: The Neoproterozoic Oxygenation Event was a major rise in Earth’s atmospheric and oceanic oxygen levels during the Neoproterozoic Era, linked to profound climatic shifts and the emergence of complex multicellular life.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.