Kimmeridgian stage
E917045
The Kimmeridgian stage is a division of the Late Jurassic period characterized by widespread marine sedimentation and important fossil-bearing strata used for global geological correlation.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Kimmeridgian | 8 |
| Kimmeridgian stage canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T11305090 — 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: Kimmeridgian stage Context triple: [Kimmeridge, givesNameTo, Kimmeridgian stage]
-
A.
Tithonian
The Tithonian is the final age of the Late Jurassic period, marked by diverse marine life and significant evolutionary developments among dinosaurs and other vertebrates.
-
B.
Toarcian
The Toarcian is a stage of the Early Jurassic period characterized by significant marine life diversification and notable oceanic anoxic events.
-
C.
Ludfordian Age
The Ludfordian Age is a late Silurian time interval characterized by significant marine biodiversity changes and notable graptolite and conodont fossil assemblages.
-
D.
Hettangian stage
The Hettangian stage is the earliest age of the Jurassic Period, marking the beginning of the Mesozoic era’s Jurassic system in the geologic time scale.
-
E.
Pliensbachian
The Pliensbachian is a stage of the Early Jurassic period characterized by distinctive marine faunas and important ammonite biostratigraphy.
- 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: Kimmeridgian stage Target entity description: The Kimmeridgian stage is a division of the Late Jurassic period characterized by widespread marine sedimentation and important fossil-bearing strata used for global geological correlation.
-
A.
Tithonian
The Tithonian is the final age of the Late Jurassic period, marked by diverse marine life and significant evolutionary developments among dinosaurs and other vertebrates.
-
B.
Toarcian
The Toarcian is a stage of the Early Jurassic period characterized by significant marine life diversification and notable oceanic anoxic events.
-
C.
Ludfordian Age
The Ludfordian Age is a late Silurian time interval characterized by significant marine biodiversity changes and notable graptolite and conodont fossil assemblages.
-
D.
Hettangian stage
The Hettangian stage is the earliest age of the Jurassic Period, marking the beginning of the Mesozoic era’s Jurassic system in the geologic time scale.
-
E.
Pliensbachian
The Pliensbachian is a stage of the Early Jurassic period characterized by distinctive marine faunas and important ammonite biostratigraphy.
- F. None of above. chosen
Statements (44)
| Predicate | Object |
|---|---|
| instanceOf |
geologic time division
ⓘ
stage ⓘ |
| characterizedBy |
black shales in some marine basins
ⓘ
extensive carbonate sedimentation in many basins ⓘ important fossil-bearing strata ⓘ widespread marine sedimentation ⓘ |
| chronologicalPosition | late phase of the Jurassic period ⓘ |
| contains |
important ammonite biozones
ⓘ
important invertebrate fossils ⓘ important marine reptile fossils ⓘ |
| correlatesWith | Upper Jurassic marine strata worldwide ⓘ |
| definedBy | International Commission on Stratigraphy NERFINISHED ⓘ |
| economicImportance | source rocks for hydrocarbons in some basins ⓘ |
| endTime | approximately 152.1 million years ago ⓘ |
| environment | predominantly marine ⓘ |
| follows | Oxfordian stage NERFINISHED ⓘ |
| fossilContent |
abundant ammonites
ⓘ
bivalves ⓘ marine reptiles ⓘ microfossils such as foraminifera ⓘ |
| geochronologicEquivalent | Kimmeridgian age ⓘ |
| lithostratigraphicUnitExample | Kimmeridge Clay Formation NERFINISHED ⓘ |
| namedAfter |
Kimmeridge
NERFINISHED
ⓘ
village of Kimmeridge in Dorset, England ⓘ |
| overlies | Oxfordian stage strata ⓘ |
| paleogeography | associated with high sea levels in many regions ⓘ |
| partOf |
Jurassic period
NERFINISHED
ⓘ
Late Jurassic NERFINISHED ⓘ Upper Jurassic series ⓘ |
| positionInJurassic | second stage of the Late Jurassic ⓘ |
| precedes | Tithonian stage NERFINISHED ⓘ |
| rank | stage ⓘ |
| recognizedBy | International Chronostratigraphic Chart NERFINISHED ⓘ |
| startTime | approximately 157.3 million years ago ⓘ |
| stratotypeLocatedIn |
Dorset, England
NERFINISHED
ⓘ
Kimmeridge Bay NERFINISHED ⓘ |
| subdividedInto |
Lower Kimmeridgian
ⓘ
Upper Kimmeridgian ⓘ |
| timeSpan | about 5.2 million years ⓘ |
| underlies | Tithonian stage strata ⓘ |
| usedFor | global geological correlation ⓘ |
| usedIn |
biostratigraphy
ⓘ
chronostratigraphy ⓘ sequence 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: Kimmeridgian stage Description of subject: The Kimmeridgian stage is a division of the Late Jurassic period characterized by widespread marine sedimentation and important fossil-bearing strata used for global geological correlation.
Referenced by (9)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Kimmeridgian stage
linked to: Kimmeridgian stage
linked to: Kimmeridgian stage
linked to: Kimmeridgian stage
linked to: Kimmeridgian stage
linked to: Kimmeridgian stage
linked to: Kimmeridgian stage
linked to: Kimmeridgian stage