Early Miocene
E262869
The Early Miocene was an epoch of the Neogene Period marked by significant global warming, diversification of mammals and marine life, and major tectonic and climatic changes that shaped modern ecosystems.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Early Miocene canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T2403608 — 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: Early Miocene Context triple: [Neogene, subdividedInto, Early Miocene]
-
A.
Oligocene Epoch
The Oligocene Epoch was a geologic time interval roughly 34 to 23 million years ago marked by global cooling, the expansion of grasslands, and significant evolution and diversification of mammals.
-
B.
Pliocene epoch
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.
-
C.
Pridoli Epoch
The Pridoli Epoch is the final epoch of the Silurian Period, marking a transitional interval in Earth’s history just before the onset of the Devonian.
-
D.
Neogene
The Neogene is a geologic period of the Cenozoic Era characterized by significant climatic cooling, the diversification of mammals and birds, and the emergence and evolution of early hominins.
-
E.
Paleogene
The Paleogene is a geologic period that marks the beginning of the Cenozoic Era, characterized by the diversification of mammals and birds following the mass extinction that ended the age of dinosaurs.
- 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: Early Miocene Target entity description: The Early Miocene was an epoch of the Neogene Period marked by significant global warming, diversification of mammals and marine life, and major tectonic and climatic changes that shaped modern ecosystems.
-
A.
Oligocene Epoch
The Oligocene Epoch was a geologic time interval roughly 34 to 23 million years ago marked by global cooling, the expansion of grasslands, and significant evolution and diversification of mammals.
-
B.
Pliocene epoch
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.
-
C.
Pridoli Epoch
The Pridoli Epoch is the final epoch of the Silurian Period, marking a transitional interval in Earth’s history just before the onset of the Devonian.
-
D.
Neogene
The Neogene is a geologic period of the Cenozoic Era characterized by significant climatic cooling, the diversification of mammals and birds, and the emergence and evolution of early hominins.
-
E.
Paleogene
The Paleogene is a geologic period that marks the beginning of the Cenozoic Era, characterized by the diversification of mammals and birds following the mass extinction that ended the age of dinosaurs.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
geologic epoch
ⓘ
subdivision of the Miocene ⓘ |
| belongsToEon | Phanerozoic Eon ⓘ |
| belongsToEra |
Cenozoic
ⓘ
surface form:
Cenozoic Era
|
| belongsToPeriod |
Neogene
ⓘ
surface form:
Neogene Period
|
| characterizedBy |
active mountain building in many orogenic belts
ⓘ
changes in ocean circulation patterns ⓘ continued decline of archaic mammal groups ⓘ continued radiation of grasslands in some regions ⓘ development of many modern-type ecosystems ⓘ development of modern-style coral reef communities ⓘ diversification of bovids and other ruminants ⓘ diversification of mammals ⓘ diversification of many rodent lineages ⓘ diversification of marine life ⓘ diversification of songbirds ⓘ evolutionary radiation of apes in Africa and Eurasia ⓘ evolutionary radiation of marine mammals ⓘ expansion of kelp forest ecosystems ⓘ expansion of seagrass habitats ⓘ expansion of warm-temperate and subtropical climates ⓘ global warming relative to Oligocene ⓘ high atmospheric CO2 compared to later Miocene ⓘ high diversity of mollusks in many marine basins ⓘ major tectonic activity ⓘ opening and modification of ocean gateways ⓘ significant climatic changes ⓘ strengthening of the Antarctic Circumpolar Current ⓘ tectonic reorganization in the Mediterranean region ⓘ uplift in the Himalaya-Tibetan region ⓘ |
| chronostratigraphicUnit | Lower Miocene Series ⓘ |
| climateEvent |
Mi-1 glaciation recovery phase from late Oligocene
ⓘ
onset of long-term cooling that continued into Middle Miocene ⓘ |
| climateTrend | generally warm with intervals of cooling ⓘ |
| correspondsTo | Lower Miocene in European stratigraphy ⓘ |
| endTime | approximately 15.97 million years ago ⓘ |
| follows | Aquitanian Stage of the Oligocene-Miocene transition ⓘ |
| hasSubdivision |
Aquitanian
ⓘ
Burdigalian ⓘ |
| importantFor |
establishment of modern biogeographic patterns
ⓘ
evolution of modern mammal faunas ⓘ evolution of modern marine ecosystems ⓘ |
| partOf |
Miocene
ⓘ
Neogene ⓘ
surface form:
Neogene Period
|
| precedes | Middle Miocene ⓘ |
| startTime | approximately 23.03 million years ago ⓘ |
| timeScaleStandard | International Commission on Stratigraphy ⓘ |
| usedIn |
Cenozoic
ⓘ
surface form:
Cenozoic 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.
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: Early Miocene Description of subject: The Early Miocene was an epoch of the Neogene Period marked by significant global warming, diversification of mammals and marine life, and major tectonic and climatic changes that shaped modern ecosystems.
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.