Pridoli Epoch
E147845
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.
All labels observed (3)
| Label | Occurrences |
|---|---|
| Pridoli | 4 |
| Pridoli Series | 2 |
| Pridoli Epoch canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T1297074 — 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: Pridoli Epoch Context triple: [Early Devonian, follows, Pridoli Epoch]
-
A.
Pleistocene epoch
The Pleistocene epoch was a geological time period characterized by repeated ice ages, widespread glaciation, and the evolution and global spread of modern humans.
-
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.
Quaternary period
The Quaternary period is the most recent division of geologic time, characterized by repeated ice ages, the evolution and global spread of modern humans, and significant climatic fluctuations over the last 2.6 million years.
-
D.
Maastrichtian
The Maastrichtian is the final stage of the Late Cretaceous period, marking the last interval of non-avian dinosaur dominance before the mass extinction event 66 million years ago.
-
E.
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.
- 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: Pridoli Epoch Target entity description: 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.
-
A.
Pleistocene epoch
The Pleistocene epoch was a geological time period characterized by repeated ice ages, widespread glaciation, and the evolution and global spread of modern humans.
-
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.
Quaternary period
The Quaternary period is the most recent division of geologic time, characterized by repeated ice ages, the evolution and global spread of modern humans, and significant climatic fluctuations over the last 2.6 million years.
-
D.
Maastrichtian
The Maastrichtian is the final stage of the Late Cretaceous period, marking the last interval of non-avian dinosaur dominance before the mass extinction event 66 million years ago.
-
E.
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.
- F. None of above. chosen
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
chronostratigraphic unit
ⓘ
geologic epoch ⓘ |
| biota |
diverse marine invertebrate faunas
ⓘ
early terrestrial plant communities ⓘ jawless and jawed fishes ⓘ |
| boundaryAboveDefinedBy | base of the Lochkovian at the Silurian–Devonian boundary ⓘ |
| boundaryBelowDefinedBy | top of the Ludfordian Stage ⓘ |
| characterizedBy |
continued diversification of early jawed fishes
ⓘ
development of early vascular land plants ⓘ stabilization of post-Late Ordovician extinction ecosystems ⓘ |
| chronologicalPosition | late Silurian ⓘ |
| climate | generally warm greenhouse conditions ⓘ |
| conodontFaunas | used for high-resolution stratigraphic subdivision ⓘ |
| contains |
Pridoli Epoch
self-linksurface differs
ⓘ
surface form:
Pridoli Series
|
| correlatesWith | uppermost Silurian strata worldwide ⓘ |
| definedBy | International Commission on Stratigraphy ⓘ |
| duration | about 4 million years ⓘ |
| end | approximately 419 million years ago ⓘ |
| endUncertainty | about ±2 million years ⓘ |
| fishEvolutionSignificance | radiation of early jawed vertebrates (gnathostomes) ⓘ |
| follows | Ludfordian Age ⓘ |
| graptoliteFaunas | important for global biostratigraphic correlation ⓘ |
| GSSPDefinedBy | first appearance of the graptolite Monograptus parultimus ⓘ |
| GSSPLocation | Pridoli section near Prague, Czech Republic ⓘ |
| ICSStatus | ratified unit on the International Chronostratigraphic Chart ⓘ |
| importance | key interval for studying Silurian–Devonian transition ⓘ |
| isEquivalentChronostratigraphicUnitOf |
Pridoli Epoch
self-linksurface differs
ⓘ
surface form:
Pridoli Series
|
| lithostratigraphicAssociations | shallow-marine carbonates and shales in many regions ⓘ |
| namedAfter |
Pridoli Epoch
self-linksurface differs
ⓘ
surface form:
Pridoli
Pridoli area near Prague in the Czech Republic ⓘ |
| paleoclimate | low-latitude tropical seas over many continental shelves ⓘ |
| paleogeography | dominance of Gondwana and Laurentia as major landmasses ⓘ |
| partOf |
Silurian
ⓘ
surface form:
Silurian Period
|
| plantEvolutionSignificance | expansion of simple vascular plants onto land ⓘ |
| positionInPeriod | final epoch of the Silurian Period ⓘ |
| positionInSystem | fourth and youngest epoch of the Silurian System ⓘ |
| precedes |
Devonian Period
ⓘ
Lochkovian Epoch ⓘ |
| seaLevelTrend | relatively high global sea levels ⓘ |
| standardAbbreviation |
Pridoli Epoch
self-linksurface differs
ⓘ
surface form:
Pridoli
|
| start | approximately 423 million years ago ⓘ |
| startUncertainty | about ±2 million years ⓘ |
| stratigraphicUsage | international chronostratigraphic standard ⓘ |
| timeScale |
Paleozoic Era
ⓘ
Phanerozoic Eon ⓘ |
| transitionRole | transitional interval between Silurian and Devonian biotas ⓘ |
| usedIn |
geologic time scale
ⓘ
stratigraphic correlation ⓘ |
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: Pridoli Epoch Description of subject: 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.
Referenced by (7)
Full triples — surface form annotated when it differs from this entity's canonical label.
this entity surface form:
Pridoli
this entity surface form:
Pridoli
this entity surface form:
Pridoli Series
this entity surface form:
Pridoli Series
this entity surface form:
Pridoli
this entity surface form:
Pridoli