Tertiary period
E234066
The Tertiary period was a major division of geologic time, spanning roughly 66 to 2.6 million years ago, during which mammals and flowering plants diversified and many modern ecosystems began to form.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Tertiary period canonical | 2 |
How this entity was disambiguated
This entity first appeared as the object of triple T2118828 — 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: Tertiary period Context triple: [Cathaya, hasFossilRecordSince, Tertiary period]
-
A.
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.
-
B.
Permian Period
The Permian Period was the final period of the Paleozoic Era, marked by the diversification of reptiles and the largest mass extinction in Earth's history at its close.
-
C.
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.
-
D.
Carboniferous period
The Carboniferous period was a Paleozoic era interval, roughly 359 to 299 million years ago, characterized by extensive swampy forests that formed vast coal deposits and by the diversification of early amphibians and insects.
-
E.
Siderian Period
The Siderian Period is the earliest division of the Paleoproterozoic, marked by widespread banded iron formation deposition and the initial rise of atmospheric oxygen on Earth.
- 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: Tertiary period Target entity description: The Tertiary period was a major division of geologic time, spanning roughly 66 to 2.6 million years ago, during which mammals and flowering plants diversified and many modern ecosystems began to form.
-
A.
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.
-
B.
Permian Period
The Permian Period was the final period of the Paleozoic Era, marked by the diversification of reptiles and the largest mass extinction in Earth's history at its close.
-
C.
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.
-
D.
Carboniferous period
The Carboniferous period was a Paleozoic era interval, roughly 359 to 299 million years ago, characterized by extensive swampy forests that formed vast coal deposits and by the diversification of early amphibians and insects.
-
E.
Siderian Period
The Siderian Period is the earliest division of the Paleoproterozoic, marked by widespread banded iron formation deposition and the initial rise of atmospheric oxygen on Earth.
- F. None of above. chosen
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
geologic period
ⓘ
obsolete geologic time unit ⓘ |
| alternativeName |
Tertiary
ⓘ
Tertiary System ⓘ |
| characterizedBy |
development of modern ecosystems
ⓘ
diversification of flowering plants ⓘ diversification of mammals ⓘ evolution of early primates ⓘ evolution of many modern mammal groups ⓘ formation of many modern mountain ranges ⓘ global cooling trend ⓘ spread of grasslands ⓘ |
| climateTrend | from warm greenhouse to cooler icehouse conditions ⓘ |
| contains |
Neogene period
ⓘ
linked to:
Neogene
Paleogene period ⓘ |
| definedBy | stratigraphic rock record ⓘ |
| endTime | about 2.6 million years ago ⓘ |
| follows |
Cretaceous period
ⓘ
Mesozoic Era ⓘ |
| includesEvent |
appearance of many modern plant families
ⓘ
development of modern coral reefs ⓘ development of modern marine ecosystems ⓘ early evolution of horses ⓘ early evolution of whales ⓘ evolution of early hominoids ⓘ expansion of savanna ecosystems ⓘ formation of modern ocean circulation patterns ⓘ major tectonic reorganization of Earth’s plates ⓘ onset of Antarctic glaciation ⓘ opening of the North Atlantic Ocean ⓘ radiation of birds ⓘ rise of large terrestrial mammals ⓘ uplift of the Alps ⓘ uplift of the Himalayas ⓘ |
| partOf |
Cenozoic Era
ⓘ
linked to:
Cenozoic
|
| precedes |
Holocene epoch
ⓘ
linked to:
Holocene
Quaternary period ⓘ |
| recognizedBy | 19th-century geologists ⓘ |
| replacedBy |
Neogene period
ⓘ
linked to:
Neogene
Paleogene period ⓘ
linked to:
Paleogene
|
| startEvent |
Cretaceous–Paleogene extinction event
ⓘ
linked to:
Cretaceous–Paleogene boundary
|
| startTime | about 66 million years ago ⓘ |
| status | no longer used as formal unit by International Commission on Stratigraphy ⓘ |
| timeScaleContext |
Cenozoic geologic time scale
ⓘ
linked to:
Cenozoic
|
| usedIn | older geologic literature ⓘ |
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: Tertiary period Description of subject: The Tertiary period was a major division of geologic time, spanning roughly 66 to 2.6 million years ago, during which mammals and flowering plants diversified and many modern ecosystems began to form.
Referenced by (2)
Full triples — surface form annotated when it differs from this entity's canonical label.