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The 99 pages that link to Cretaceous–Paleogene extinction event, each with the reason it gives.

• BirdRelated: The surviving bird lineage diversified after this extinction reshaped ecosystems.

• CretaceousRelated: This event marks the Cretaceous's abrupt end.

• Geologic time scaleRelated: Its abrupt fossil change marks the boundary between two periods.

• PaleoecologyRelated: Its fossil record tracks abrupt ecosystem collapse and subsequent recovery.

• DinosauriaRelated: It ended non-avian dinosaur lineages while birds survived.

• MesozoicRelated: It ended the Mesozoic and profoundly altered ecosystems.

• BeakRelated: Surviving bird lineages diversified after this extinction, including in beak form.

• Late CretaceousRelated: This event marks the epoch’s end and reshaped life on Earth.

• CenozoicRelated: Its boundary marks the beginning of the Cenozoic.

• DinosaurRelated: It ended the era of non-avian dinosaurs while leaving birds alive.

• ActinopterygiiRelated: Surviving actinopterygian lineages diversified in ecosystems reshaped by this extinction.

• Deccan TrapsRelated: Deccan eruptions overlapped the extinction, though their contribution remains debated.

• AvialaeRelated: Only some avialan lineages survived this event, leaving the ancestors of living birds.

• PaleoceneRelated: It marks the Paleocene’s beginning and reshaped its ecosystems.

• Hell Creek FormationRelated: Hell Creek fossils are used to study how terrestrial communities changed across the extinction.

• MosasaurRelated: Mosasaurs disappeared in this extinction event at the end of the Cretaceous.

• AmmoniteRelated: Ammonites disappeared in this event, ending a lineage with a long fossil record.

• PlesiosauriaRelated: Plesiosaurs disappeared in this global extinction event.

• TriceratopsRelated: Triceratops disappeared in the extinction that closed the Cretaceous Period.

• CrocodyliaRelated: Crocodylians survived an extinction that removed many dominant land vertebrates.

• Evolution of mammalsRelated: Its aftermath opened ecological opportunities for many surviving mammal lineages.

• PaleoceanographyRelated: Marine microfossils and geochemistry document the extinction's abrupt effects on ocean life and chemistry.

• Vertebrate paleontologyRelated: Its fossil record reveals the scale and selectivity of a major vertebrate extinction.

• Evolution of birdsRelated: Its aftermath opened ecological opportunities for the bird lineages that survived.

• Impact winterRelated: Impact-driven darkness and cooling are leading explanations for the extinction's rapid ecological collapse.

• AvesRelated: Only some bird lineages survived this extinction, shaping all later avian diversity.

• AfrotheriaRelated: Afrotherian lineages diversified during the mammalian radiations following this extinction.

• CrocodyliformesRelated: The event reshaped crocodyliform diversity, while several lineages survived it.

• SaurischiaRelated: It ended the history of non-avian saurischians while birds survived.

• AnseriformesRelated: The event frames debate over when modern waterfowl lineages originated and diversified.

• CoraciiformesRelated: The subsequent ecological radiation of birds provides context for the order’s deep evolutionary history.

• Cretaceous–Paleogene boundaryRelated: The boundary is a time marker; the extinction is the biological event it records.

• EutheriaRelated: The extinction reshaped ecosystems and preceded major eutherian diversification.

• Evolution of insectsRelated: Its aftermath changed ecosystems, while many insect groups persisted and diversified.

• IridiumRelated: Iridium-rich boundary deposits helped connect this extinction to an extraterrestrial impact.

• MosasauridaeRelated: Mosasauridae disappeared in the mass extinction that closed the Cretaceous.

• Non-avian dinosaurRelated: This event marks the end of non-avian dinosaurs in the fossil record.

• QuetzalcoatlusRelated: Quetzalcoatlus lived shortly before the extinction that ended the pterosaur lineage.

• Asteroid impactRelated: The Chicxulub impact is the leading explanation for this abrupt global biological crisis.

• CeratopsidaeRelated: Ceratopsidae disappeared in the extinction that ended the family’s fossil record.

• KansasRelated: It marks the end of the period represented by Kansas's marine fossil deposits.

• PalaeognathaeRelated: Palaeognath fossils and molecular estimates place the group's early history around this major boundary.

• PlacentaliaRelated: Placental mammals diversified extensively after this ecological upheaval.

• TylosaurusRelated: Tylosaurus vanished in the mass extinction that ended the Cretaceous.

• AcanthomorphaRelated: Surviving fish lineages diversified in ecosystems transformed by this global extinction.

• ArgentinosaurusRelated: Argentinosaurus lived earlier in the Cretaceous, well before this extinction.

• DeinosuchusRelated: Deinosuchus disappeared before or around the boundary that marks this global ecological upheaval.

• EulipotyphlaRelated: The mammalian radiations following this extinction provide context for early eulipotyphlan diversification.

• MosasaurusRelated: Mosasaurus and other non-avian dinosaurs disappeared in this event.

• NeornithesRelated: The surviving Neornithes lineages diversified after this major extinction.