Pliocene epoch
E5179
The Pliocene epoch was a geological time period roughly 5.3 to 2.6 million years ago marked by cooler global climates, the expansion of grasslands, and significant evolutionary developments among mammals and early hominins.
All labels observed (8)
| Label | Occurrences |
|---|---|
| Pliocene | 14 |
| Pliocene epoch canonical | 2 |
| Early Pliocene | 1 |
| Late Pliocene | 1 |
| Piacenzian age | 1 |
| Pliocene Epoch | 1 |
| Pliocene–Pleistocene boundary | 1 |
| Zanclean age | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T60641 — 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: Pliocene epoch Context triple: [Isthmus of Panama, formedDuring, Pliocene epoch]
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A.
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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B.
Interwar period
The Interwar period was the turbulent era between World War I and World War II marked by political upheaval, economic crises, and the rise of totalitarian regimes across Europe and beyond.
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C.
Roaring Twenties
The Roaring Twenties was a decade of economic prosperity, cultural dynamism, and social change in the 1920s, marked by jazz music, flapper culture, and rapid industrial growth, particularly in the United States and Western Europe.
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D.
Pacific Plate
The Pacific Plate is the largest tectonic plate on Earth, underlying most of the Pacific Ocean and driving significant volcanic and seismic activity along its boundaries.
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E.
Taisho era
The Taisho era was a period in Japanese history from 1912 to 1926 marked by political liberalization, cultural modernization, and the growth of urban middle-class society.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
Target entity: Pliocene epoch Target entity description: The Pliocene epoch was a geological time period roughly 5.3 to 2.6 million years ago marked by cooler global climates, the expansion of grasslands, and significant evolutionary developments among mammals and early hominins.
-
A.
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.
-
B.
Interwar period
The Interwar period was the turbulent era between World War I and World War II marked by political upheaval, economic crises, and the rise of totalitarian regimes across Europe and beyond.
-
C.
Roaring Twenties
The Roaring Twenties was a decade of economic prosperity, cultural dynamism, and social change in the 1920s, marked by jazz music, flapper culture, and rapid industrial growth, particularly in the United States and Western Europe.
-
D.
Pacific Plate
The Pacific Plate is the largest tectonic plate on Earth, underlying most of the Pacific Ocean and driving significant volcanic and seismic activity along its boundaries.
-
E.
Taisho era
The Taisho era was a period in Japanese history from 1912 to 1926 marked by political liberalization, cultural modernization, and the growth of urban middle-class society.
- F. None of above. chosen
Statements (47)
| Predicate | Object |
|---|---|
| instanceOf |
chronostratigraphic unit
ⓘ
geological epoch ⓘ |
| associatedWith |
evolution of Australopithecus in Africa
ⓘ
spread of savanna habitats in Africa ⓘ |
| atmosphericCO2Level | higher than pre-industrial Holocene levels ⓘ |
| biogeographicEvent | Great American Biotic Interchange between North and South America ⓘ |
| boundaryDefinedBy |
base of marine isotope stage 103 at lower boundary
ⓘ
first appearance of the planktonic foraminifer Globorotalia margaritae at base ⓘ |
| chronologyStandardizedBy | International Commission on Stratigraphy ⓘ |
| climateCharacteristic |
generally warmer than present day early in epoch
ⓘ
increasing high-latitude glaciation toward end ⓘ overall global cooling trend ⓘ |
| contains |
Pliocene epoch
self-linksurface differs
ⓘ
surface form:
Piacenzian age
Pliocene epoch self-linksurface differs ⓘ
surface form:
Zanclean age
|
| duration | about 2.75 million years ⓘ |
| endTime | about 2.58 million years ago ⓘ |
| faunalCharacteristic |
diversification of grazing mammals
ⓘ
modern-type mammal faunas becoming established ⓘ significant evolution of early hominins ⓘ |
| followedBy | Pleistocene epoch ⓘ |
| follows | Miocene epoch ⓘ |
| geologicTimeScaleRank | epoch ⓘ |
| glaciationCharacteristic |
expansion of Antarctic ice sheet
ⓘ
onset of significant Northern Hemisphere ice sheets near end ⓘ |
| marineLifeCharacteristic |
diversification of marine mammals such as seals and whales
ⓘ
modern-style marine ecosystems largely established ⓘ |
| namedBy | Charles Lyell ⓘ |
| nameMeaning | more recent (from Greek pleion and kainos) ⓘ |
| paleoclimateSignificance | used as partial analog for future warm climates with higher CO2 ⓘ |
| paleogeographyCharacteristic |
continued closure of Central American Seaway
ⓘ
near-complete formation of Isthmus of Panama ⓘ strengthening of Gulf Stream circulation ⓘ |
| partOf |
Cenozoic
ⓘ
surface form:
Neogene period
|
| positionInTimeScale | second and last epoch of the Neogene period ⓘ |
| precedes | Quaternary period ⓘ |
| seaLevelCharacteristic |
falling sea levels toward end of epoch
ⓘ
higher global sea levels than today in early Pliocene ⓘ |
| startTime | about 5.333 million years ago ⓘ |
| subdivisionOf |
Cenozoic
ⓘ
surface form:
Cenozoic era
Phanerozoic Eon ⓘ
surface form:
Phanerozoic eon
|
| tectonicActivityCharacteristic |
continued uplift of the Andes
ⓘ
continued uplift of the East African Rift system ⓘ continued uplift of the Himalayas ⓘ |
| upperBoundaryDefinedBy |
base of marine isotope stage 103 of Pleistocene (Gelasian) in modern timescale alignment
ⓘ
onset of widespread Northern Hemisphere glaciation ⓘ |
| vegetationCharacteristic |
contraction of tropical forests in many regions
ⓘ
expansion of grasslands ⓘ |
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: Pliocene epoch Description of subject: The Pliocene epoch was a geological time period roughly 5.3 to 2.6 million years ago marked by cooler global climates, the expansion of grasslands, and significant evolutionary developments among mammals and early hominins.
Referenced by (22)
Full triples — surface form annotated when it differs from this entity's canonical label.