Cambrian Period

E88508
geologic period stratigraphic unit

The Cambrian Period was an early division of geologic time marked by a rapid diversification of life known as the "Cambrian explosion," during which most major animal groups first appeared in the fossil record.

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All labels observed (5)

Label Occurrences
Cambrian period 13
Cambrian Period canonical 9
Cambrian 1

Statements (49)

Predicate Object
instanceOf geologic period ⓘ
stratigraphic unit ⓘ
characterizedBy appearance of most major animal phyla in the fossil record ⓘ
development of complex food webs ⓘ
evolution of hard body parts ⓘ
increased bioturbation of seafloor sediments ⓘ
rapid diversification of animal life ⓘ
widespread marine ecosystems ⓘ
duration about 56 million years ⓘ
endTime about 485 million years ago ⓘ
fieldOfStudy geology ⓘ
paleontology ⓘ
stratigraphy ⓘ
followedByEvent Great Ordovician Biodiversification Event ⓘ
follows Ediacaran Period ⓘ
hasBoundaryDefinedBy first appearance of the trace fossil Treptichnus pedum ⓘ
hasClimate generally warm climate ⓘ
hasEnvironment predominantly marine habitats ⓘ
hasKeyEvent Cambrian explosion ⓘ
hasLifeForm annelid worms ⓘ
archaeocyathids ⓘ
arthropods ⓘ
brachiopods ⓘ
cnidarians ⓘ
early chordates ⓘ
early echinoderms ⓘ
lobopodians ⓘ
small shelly fossils ⓘ
sponges ⓘ
trilobites ⓘ
hasNotableFossilSite Burgess Shale fossil lagerstätte ⓘ
surface form: Burgess Shale

Burgess Shale fossil lagerstätte ⓘ
surface form: Chengjiang biota

Emu Bay Shale ⓘ
Sirius Passet ⓘ
hasSeaLevel high global sea levels ⓘ
hasTectonicContext assembly of early Paleozoic continents ⓘ
breakup of supercontinent Pannotia ⓘ
namedAfter Cambria ⓘ
Wales ⓘ
partOf Paleozoic Era ⓘ
precededByEvent Ediacaran biota decline ⓘ
precedes Ordovician Period ⓘ
recognizedBy International Commission on Stratigraphy ⓘ
startTime about 541 million years ago ⓘ
subdividedInto Furongian ⓘ
Miaolingian ⓘ
Series 2 ⓘ
Terreneuvian ⓘ
usedIn geologic time scale ⓘ

Referenced by (25)

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

Phanerozoic Eon → contains → Cambrian Period ⓘ
Vertebrata → hasFossilRecordSince → Cambrian Period ⓘ
this entity surface form: Cambrian period
Paleozoic Era → contains → Cambrian Period ⓘ
International Chronostratigraphic Chart → includes → Cambrian Period ⓘ
Neoproterozoic Era → precedes → Cambrian Period ⓘ
Amadeus Basin geological region → geologicalPeriod → Cambrian Period ⓘ
subject surface form: Amadeus Basin
this entity surface form: Cambrian
Cambrian explosion → partOf → Cambrian Period ⓘ
this entity surface form: Cambrian period
Ordovician Period → follows → Cambrian Period ⓘ
Agnatha → firstAppearance → Cambrian Period ⓘ
this entity surface form: Cambrian period
Crustacea → firstAppearance → Cambrian Period ⓘ
this entity surface form: Cambrian period
Cephalopoda → fossilRecordExtendsBackTo → Cambrian Period ⓘ
this entity surface form: Cambrian period
Protostomia → hasFossilRecord → Cambrian Period ⓘ
this entity surface form: Cambrian period
Hemichordata → firstAppearance → Cambrian Period ⓘ
this entity surface form: Cambrian period
Chelicerata → firstAppearance → Cambrian Period ⓘ
this entity surface form: Cambrian period
Cambrian biota → temporalLocation → Cambrian Period ⓘ
this entity surface form: Cambrian period
Ediacaran Period → followedBy → Cambrian Period ⓘ
Brachiopoda → firstAppearance → Cambrian Period ⓘ
this entity surface form: Cambrian period
Tardigrada → fossilRecord → Cambrian Period ⓘ
this entity surface form: Cambrian period
Priapulida → firstAppearance → Cambrian Period ⓘ
this entity surface form: Cambrian period
Cambria → inspiredNameOf → Cambrian Period ⓘ
this entity surface form: Cambrian period
Sirius Passet → geologicalStage → Cambrian Period ⓘ
this entity surface form: Cambrian Series 2
Terreneuvian → partOf → Cambrian Period ⓘ
Terreneuvian → startOf → Cambrian Period ⓘ
Terreneuvian → belongsToSystem → Cambrian Period ⓘ
this entity surface form: Cambrian System
Miaolingian → partOf → Cambrian Period ⓘ