Paleocene
E721105
The Paleocene was an early Cenozoic epoch, roughly 66–56 million years ago, marked by the recovery of life after the dinosaur-extinction event and the rapid diversification of mammals.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Paleocene canonical | 6 |
| Paleocene Epoch | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T8255591 — 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: Paleocene Context triple: [Xenarthra, fossilRecordSince, Paleocene]
-
A.
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.
-
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.
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.
-
D.
Miocene
The Miocene is a geologic epoch of the Neogene Period characterized by significant global cooling, expansion of grasslands, and diversification of mammals and early apes.
-
E.
Cenozoic
The Cenozoic is the current geological era, beginning about 66 million years ago, characterized by the rise and diversification of mammals and birds and the formation of many modern mountain ranges and continents.
- 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: Paleocene Target entity description: The Paleocene was an early Cenozoic epoch, roughly 66–56 million years ago, marked by the recovery of life after the dinosaur-extinction event and the rapid diversification of mammals.
-
A.
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.
-
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.
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.
-
D.
Miocene
The Miocene is a geologic epoch of the Neogene Period characterized by significant global cooling, expansion of grasslands, and diversification of mammals and early apes.
-
E.
Cenozoic
The Cenozoic is the current geological era, beginning about 66 million years ago, characterized by the rise and diversification of mammals and birds and the formation of many modern mountain ranges and continents.
- F. None of above. chosen
Statements (46)
| Predicate | Object |
|---|---|
| instanceOf |
chronostratigraphic unit
ⓘ
geologic epoch ⓘ |
| characterizedBy |
absence of polar ice sheets
ⓘ
decline of non-avian dinosaurs ⓘ development of modern coral reefs in some regions ⓘ evolution of early carnivorous mammals ⓘ evolution of early primate relatives ⓘ evolution of early ungulate-like mammals ⓘ evolution of large flightless birds in some regions ⓘ expansion of angiosperm-dominated forests ⓘ high atmospheric CO2 levels ⓘ radiation of birds ⓘ radiation of mammals ⓘ recovery of biodiversity after mass extinction ⓘ relatively low diversity of marine plankton compared to later Cenozoic ⓘ warm global climate ⓘ |
| climateEventNearEnd | Paleocene–Eocene Thermal Maximum precursor changes ⓘ |
| climateTrend | generally warm and equable ⓘ |
| contains |
Danian age
NERFINISHED
ⓘ
Selandian age ⓘ Thanetian age NERFINISHED ⓘ |
| correlatesWith |
Danian Stage
NERFINISHED
ⓘ
Selandian Stage NERFINISHED ⓘ Thanetian Stage NERFINISHED ⓘ |
| definedBy | International Commission on Stratigraphy NERFINISHED ⓘ |
| end | approximately 56 million years ago ⓘ |
| follows | Cretaceous ⓘ |
| lowerBoundaryCoincidesWith | iridium-rich clay layer at K–Pg boundary ⓘ |
| lowerBoundaryDefinedBy | first appearance of the planktonic foraminiferan Globigerina eugubina ⓘ |
| marineLife |
recovery and diversification of teleost fishes
ⓘ
recovery of ammonite-free marine ecosystems ⓘ |
| nameCoinedBy | Paul Gervais NERFINISHED ⓘ |
| nameMeaning | ancient recent ⓘ |
| partOf |
Cenozoic Era
NERFINISHED
ⓘ
Paleogene Period NERFINISHED ⓘ |
| precedes | Eocene ⓘ |
| start | approximately 66 million years ago ⓘ |
| startEvent | Cretaceous–Paleogene extinction event NERFINISHED ⓘ |
| stratotypeRegion | Danish Basin NERFINISHED ⓘ |
| terrestrialFauna |
absence of large non-avian dinosaur megafauna
ⓘ
small-bodied mammals dominant ⓘ |
| terrestrialFlora | broadleaf evergreen forests at high latitudes ⓘ |
| usedIn |
geologic time scale
ⓘ
paleoclimatology ⓘ paleontology ⓘ stratigraphy ⓘ |
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: Paleocene Description of subject: The Paleocene was an early Cenozoic epoch, roughly 66–56 million years ago, marked by the recovery of life after the dinosaur-extinction event and the rapid diversification of mammals.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Paleocene Epoch