Permian Period

E93510
geological period stratigraphic unit

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.

Jump to: Surface forms Statements Referenced by

Observed surface forms (3)

Surface form Occurrences
Permian period 2
Changhsingian 1
Permian 1

Statements (50)

Predicate Object
instanceOf geological period ⓘ
stratigraphic unit ⓘ
approximateDuration about 47 million years ⓘ
containsStage Artinskian ⓘ
Asselian ⓘ
Capitanian ⓘ
Permian Period self-linksurface differs ⓘ
surface form: Changhsingian

Kungurian ⓘ
Roadian ⓘ
Sakmarian ⓘ
Wordian ⓘ
Wuchiapingian ⓘ
endBoundaryDefinedBy Meishan section China for base of Triassic ⓘ
surface form: GSSP at Meishan, Zhejiang, China (base of Triassic)
endedWith Permian–Triassic mass extinction ⓘ
surface form: Permian–Triassic extinction event
endTime approximately 251.9 million years ago ⓘ
followedByEvent Mesozoic Era ⓘ
follows Carboniferous period ⓘ
surface form: Carboniferous Period
globalBoundaryStratotypeSectionAndPoint GSSP at Aidaralash Creek, Kazakhstan (base of Asselian) ⓘ
hasCharacteristic assembly of supercontinent Pangaea ⓘ
decline of many marine invertebrate groups ⓘ
development of therapsids ⓘ
diversification of reptiles ⓘ
expansion of gymnosperm forests ⓘ
extensive evaporite deposition ⓘ
largest mass extinction in Earth history ⓘ
radiation of early conifers ⓘ
reduction of coal-swamp ecosystems ⓘ
widespread arid and continental climates ⓘ
hasSubdivision Cisuralian Epoch ⓘ
Guadalupian Epoch ⓘ
Lopingian Epoch ⓘ
majorExtinctionLoss many brachiopod groups ⓘ
many fusulinid foraminifera ⓘ
many reef-building organisms ⓘ
trilobites ⓘ
namedAfter Perm Krai ⓘ
city of Perm ⓘ
namedBy Roderick Murchison ⓘ
notableFauna early archosauriforms ⓘ
pelycosaurs ⓘ
therapsids ⓘ
notableFlora conifers ⓘ
ginkgophytes ⓘ
seed ferns ⓘ
partOf Paleozoic Era ⓘ
positionInEon Phanerozoic Eon ⓘ
positionInEra last period of the Paleozoic Era ⓘ
precedes Triassic ⓘ
surface form: Triassic Period
startTime approximately 298.9 million years ago ⓘ
timeNamed 1841 ⓘ

Referenced by (9)

Full triples — surface form annotated when it differs from this entity's canonical label.

Paleozoic Era → contains → Permian Period ⓘ
Phanerozoic Eon → contains → Permian Period ⓘ
Permian Period → containsStage → Permian Period self-linksurface differs ⓘ
this entity surface form: Changhsingian
Appalachian orogeny → endTime → Permian Period ⓘ
Variscan orogeny → endTime → Permian Period ⓘ
Rose rock → geologicalAge → Permian Period ⓘ
this entity surface form: Permian
this entity surface form: Permian period
Carboniferous period → precedes → Permian Period ⓘ
this entity surface form: Permian period