Eifelian Stage
E1505839
UNEXPLORED
The Eifelian Stage is a division of the Middle Devonian period characterized by significant marine biodiversity and widely used as a global reference interval in geological time scales.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Eifelian Stage canonical | 4 |
How this entity was disambiguated
This entity first appeared as the object of triple T21808354 — 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: Eifelian Stage Context triple: [Emsian–Eifelian boundary, separates, Eifelian Stage]
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A.
Emsian Stage
The Emsian Stage is a division of the Early Devonian epoch characterized by distinctive marine fossil assemblages and sedimentary deposits used to correlate rock layers worldwide.
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B.
Asselian Stage
The Asselian Stage is the earliest stage of the Permian Period, marking the transition from the Carboniferous and characterized by distinctive marine and terrestrial fossil assemblages used for global stratigraphic correlation.
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C.
Darriwilian Stage
The Darriwilian Stage is a division of the Ordovician Period marked by significant diversification of marine life and used globally to date and correlate Middle Ordovician rock strata.
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D.
Famennian stage
The Famennian stage is the final stage of the Late Devonian Period, marked by significant evolutionary turnover and recovery following major extinction events.
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E.
Aquitanian Stage
The Aquitanian Stage is the earliest age of the Miocene Epoch, marking a distinct interval in Earth’s geologic time characterized by significant climatic and faunal transitions.
- 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: Eifelian Stage Target entity description: The Eifelian Stage is a division of the Middle Devonian period characterized by significant marine biodiversity and widely used as a global reference interval in geological time scales.
-
A.
Emsian Stage
The Emsian Stage is a division of the Early Devonian epoch characterized by distinctive marine fossil assemblages and sedimentary deposits used to correlate rock layers worldwide.
-
B.
Asselian Stage
The Asselian Stage is the earliest stage of the Permian Period, marking the transition from the Carboniferous and characterized by distinctive marine and terrestrial fossil assemblages used for global stratigraphic correlation.
-
C.
Darriwilian Stage
The Darriwilian Stage is a division of the Ordovician Period marked by significant diversification of marine life and used globally to date and correlate Middle Ordovician rock strata.
-
D.
Famennian stage
The Famennian stage is the final stage of the Late Devonian Period, marked by significant evolutionary turnover and recovery following major extinction events.
-
E.
Aquitanian Stage
The Aquitanian Stage is the earliest age of the Miocene Epoch, marking a distinct interval in Earth’s geologic time characterized by significant climatic and faunal transitions.
- F. None of above. chosen
Referenced by (4)
Full triples — surface form annotated when it differs from this entity's canonical label.