Cretaceous-Tertiary extinction event

URI: https://gptkb.org/entity/Cretaceous-Tertiary_extinction_event
GPTKB entity
Statements (46)
Predicate Object
gptkbp:instanceOf 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
paleontology
extinction events
geological 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
https://www.w3.org/2000/01/rdf-schema#label Cretaceous-Tertiary extinction event
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