Middle Permian
E1203282
UNEXPLORED
The Middle Permian, also known as the Guadalupian, is a subdivision of the Permian Period marked by significant evolutionary diversification and the development of extensive reef ecosystems before the end-Permian mass extinction.
All labels observed (1)
| Label | Occurrences |
|---|---|
| Middle Permian canonical | 5 |
How this entity was disambiguated
This entity first appeared as the object of triple T16268388 — 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: Middle Permian Context triple: [Guadalupian Epoch, positionInPeriod, Middle Permian]
-
A.
Lower Permian Series
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.
-
B.
Sakmarian stage of the Permian
The Sakmarian stage of the Permian is an early subdivision of the Permian Period characterized by distinctive marine and terrestrial fossil assemblages and significant global climatic and sea-level changes.
-
C.
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.
-
D.
Middle Triassic
The Middle Triassic is the middle epoch of the Triassic Period, marked by the recovery of life after the end-Permian mass extinction and the early diversification of dinosaurs and marine reptiles.
-
E.
Carboniferous–Permian boundary
The Carboniferous–Permian boundary marks the internationally recognized transition between the late Paleozoic Carboniferous and Permian periods, defined stratigraphically by a Global Boundary Stratotype Section and Point (GSSP).
- 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: Middle Permian Target entity description: The Middle Permian, also known as the Guadalupian, is a subdivision of the Permian Period marked by significant evolutionary diversification and the development of extensive reef ecosystems before the end-Permian mass extinction.
-
A.
Lower Permian Series
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.
-
B.
Sakmarian stage of the Permian
The Sakmarian stage of the Permian is an early subdivision of the Permian Period characterized by distinctive marine and terrestrial fossil assemblages and significant global climatic and sea-level changes.
-
C.
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.
-
D.
Middle Triassic
The Middle Triassic is the middle epoch of the Triassic Period, marked by the recovery of life after the end-Permian mass extinction and the early diversification of dinosaurs and marine reptiles.
-
E.
Carboniferous–Permian boundary
The Carboniferous–Permian boundary marks the internationally recognized transition between the late Paleozoic Carboniferous and Permian periods, defined stratigraphically by a Global Boundary Stratotype Section and Point (GSSP).
- F. None of above. chosen
Referenced by (5)
Full triples — surface form annotated when it differs from this entity's canonical label.