|
gptkbp:instanceOf
|
mass extinction event
|
|
gptkbp:alsoKnownAs
|
gptkb:Cretaceous–Paleogene_extinction_event
gptkb:K-Pg_extinction
|
|
gptkbp:borders
|
Cretaceous and Paleogene periods
|
|
gptkbp:causedBy
|
gptkb:volcanic_activity
climate change
asteroid impact
|
|
gptkbp:causeOfExtinction
|
gptkb:ammonites
pterosaurs
non-avian dinosaurs
many plant species
many marine invertebrates
many marine reptiles
|
|
gptkbp:evidence
|
gptkb:shocked_quartz
iridium layer
tektites
|
|
gptkbp:followedBy
|
gptkb:Paleogene_period
rise of mammals
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
K-T extinction
|
|
gptkbp:mainImpactSite
|
gptkb:Chicxulub_crater
|
|
gptkbp:mainImpactSiteLocation
|
gptkb:Yucatán_Peninsula,_Mexico
|
|
gptkbp:occurredIn
|
about 66 million years ago
end of Cretaceous period
|
|
gptkbp:percentageOfSpeciesLost
|
about 75%
|
|
gptkbp:relatedTo
|
gptkb:Paleogene_period
gptkb:Cretaceous_period
gptkb:Deccan_Traps_volcanism
|
|
gptkbp:significance
|
major transition in Earth's biological history
|
|
gptkbp:studiedBy
|
paleontologists
|
|
gptkbp:bfsParent
|
gptkb:Cretaceous-Paleogene_extinction
|
|
gptkbp:bfsLayer
|
7
|