|
gptkbp:instanceOf
|
gptkb:mass_extinction_event
|
|
gptkbp:affects
|
marine ecosystems
terrestrial ecosystems
|
|
gptkbp:alsoKnownAs
|
gptkb:Cretaceous–Paleogene_extinction_event
gptkb:K–Pg_extinction_event
|
|
gptkbp:asteroidImpactLocation
|
gptkb:Yucatán_Peninsula,_Mexico
|
|
gptkbp:asteroidImpactSite
|
gptkb:Chicxulub_crater
|
|
gptkbp:boundaryLayer
|
gptkb:K–T_boundary
|
|
gptkbp:causedBy
|
asteroid impact
|
|
gptkbp:causeOfExtinction
|
gptkb:ammonites
pterosaurs
non-avian dinosaurs
many plant species
many marine invertebrates
many marine reptiles
|
|
gptkbp:endDate
|
gptkb:Mesozoic_Era
|
|
gptkbp:evidence
|
gptkb:shocked_quartz
iridium layer
tektites
|
|
gptkbp:firstProposedImpactHypothesisBy
|
gptkb:Luis_Alvarez
gptkb:Walter_Alvarez
|
|
gptkbp:followedBy
|
gptkb:Paleogene_period
|
|
gptkbp:occurredIn
|
about 66 million years ago
end of Cretaceous period
|
|
gptkbp:percentageOfSpeciesExtinct
|
about 75%
|
|
gptkbp:possibleAdditionalCauses
|
gptkb:volcanic_activity
gptkb:Deccan_Traps_eruptions
climate change
sea level fall
|
|
gptkbp:precededBy
|
gptkb:Cretaceous_period
|
|
gptkbp:significance
|
enabled mammalian diversification
end of dinosaur dominance
major transition in Earth's history
|
|
gptkbp:startDate
|
gptkb:Cenozoic_Era
|
|
gptkbp:studiedBy
|
geologists
paleontologists
|
|
gptkbp:survived
|
birds
amphibians
mammals
turtles
crocodilians
some plants
|
|
gptkbp:yearImpactHypothesisProposed
|
1980
|
|
gptkbp:bfsParent
|
gptkb:Cretaceous–Tertiary_extinction_event
|
|
gptkbp:bfsLayer
|
7
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
K–T extinction event
|