Cretaceous-Tertiary extinction event

GPTKB entity

Predicate	Object
gptkbp:instanceOf	gptkb:mass_extinction_event
gptkbp:alsoKnownAs	gptkb:Cretaceous–Paleogene_extinction_event gptkb:K–T_extinction_event
gptkbp:asteroidImpactLocation	gptkb:Yucatán_Peninsula
gptkbp:asteroidImpactSite	gptkb:Chicxulub_crater
gptkbp:borders	gptkb:Mesozoic_era gptkb:Paleogene_period gptkb:Cretaceous_period gptkb:Cenozoic_era
gptkbp:boundaryLayerName	gptkb:K–Pg_boundary gptkb:K–T_boundary
gptkbp:category	gptkb:Paleogene_period gptkb:Cretaceous_period gptkb:geological_events paleontology extinction events
gptkbp:causedBy	gptkb:volcanic_activity climate change asteroid impact sea level fall
gptkbp:causeOfExtinction	gptkb:ammonites pterosaurs non-avian dinosaurs many plant species many bird species many marine reptiles many invertebrate species
gptkbp:evidence	gptkb:shocked_quartz iridium layer tektites
gptkbp:occurredApproximately	66 million years ago
gptkbp:occurredAtEndOf	gptkb:Cretaceous_period
gptkbp:occurredAtStartOf	gptkb:Paleogene_period
gptkbp:percentageOfSpeciesExtinct	about 75%
gptkbp:proposedBy	gptkb:Luis_Alvarez gptkb:Walter_Alvarez
gptkbp:significance	rise of mammals end of dinosaurs major evolutionary turnover
gptkbp:studiedBy	geologists paleontologists
gptkbp:volcanicActivityLocation	gptkb:Deccan_Traps
gptkbp:yearProposed	1980
gptkbp:bfsParent	gptkb:Cretaceous-Paleogene_extinction_event
gptkbp:bfsLayer	7
https://www.w3.org/2000/01/rdf-schema#label	Cretaceous-Tertiary extinction event