Lower Permian Series
E1197055
UNEXPLORED
The Lower Permian Series, formally known as the Cisuralian Epoch, is the earliest subdivision of the Permian Period, marking a time of significant evolutionary diversification and climatic change in Earth's history.
All labels observed (2)
| Label | Occurrences |
|---|---|
| Early Permian | 2 |
| Lower Permian Series canonical | 1 |
How this entity was disambiguated
This entity first appeared as the object of triple T16171171 — 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: Lower Permian Series Context triple: [Cisuralian Epoch, alsoKnownAs, Lower Permian Series]
-
A.
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.
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B.
Guadalupian Epoch
The Guadalupian Epoch is a middle subdivision of the Permian characterized by significant marine biodiversity followed by major ecological changes leading toward the end-Permian mass extinction.
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C.
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.
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D.
Devonian Period
The Devonian Period was a division of the Paleozoic Era characterized by the diversification of fish, the first significant colonization of land by plants and early tetrapods, and major reef-building in the oceans.
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E.
Bathonian
The Bathonian is a Middle Jurassic age and stage in the geologic timescale, known for widespread marine sedimentation and diverse fossil assemblages across Europe and beyond.
- 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: Lower Permian Series Target entity description: The Lower Permian Series, formally known as the Cisuralian Epoch, is the earliest subdivision of the Permian Period, marking a time of significant evolutionary diversification and climatic change in Earth's history.
-
A.
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.
-
B.
Guadalupian Epoch
The Guadalupian Epoch is a middle subdivision of the Permian characterized by significant marine biodiversity followed by major ecological changes leading toward the end-Permian mass extinction.
-
C.
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.
-
D.
Devonian Period
The Devonian Period was a division of the Paleozoic Era characterized by the diversification of fish, the first significant colonization of land by plants and early tetrapods, and major reef-building in the oceans.
-
E.
Bathonian
The Bathonian is a Middle Jurassic age and stage in the geologic timescale, known for widespread marine sedimentation and diverse fossil assemblages across Europe and beyond.
- F. None of above. chosen
Referenced by (3)
Full triples — surface form annotated when it differs from this entity's canonical label.
subject surface form:
Equatorial Euramerica
this entity surface form:
Early Permian