Matches in DBpedia 2015-10 for { <http://dbpedia.org/resource/Cretaceous–Paleogene_extinction_event> ?p ?o }
- Cretaceous–Paleogene_extinction_event abstract "The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a mass extinction of some three-quarters of plant and animal species on Earth—including all non-avian dinosaurs—that occurred over a geologically short period of time, 66 million years ago. It marked the end of the Cretaceous period and with it, the entire Mesozoic Era, opening the Cenozoic Era that continues today.In the geologic record, the K–Pg event is marked by a thin layer of sediment called the K–Pg boundary, which can be found throughout the world in marine and terrestrial rocks. The boundary clay shows high levels of the metal iridium, which is rare in the Earth's crust but abundant in asteroids.As originally proposed by a team of scientists led by Luis Alvarez, it is now generally believed that the K–Pg extinction was triggered by a massive comet/asteroid impact 66 million years ago and its catastrophic effects on the global environment, including a lingering impact winter that made it impossible for plants and plankton to carry out photosynthesis. The impact hypothesis was bolstered by the discovery of the 180-kilometre-wide (112 mi) Chicxulub crater in the Gulf of Mexico in the early 1990s, which provided conclusive evidence that the K–Pg boundary clay represented debris from an asteroid impact. The fact that the extinctions occurred at the same time as the impact provides strong situational evidence that the K–Pg extinction was caused by the asteroid. However, some scientists maintain the extinction was caused or exacerbated by other factors, such as volcanic eruptions, climate change, or sea level change, separately or together.A wide range of species perished in the K–Pg extinction. The most well-known victims are the non-avian dinosaurs. However, the extinction also destroyed a plethora of other terrestrial organisms, including but not limited to certain mammals, pterosaurs, birds, lizards, insects, and plants. In the oceans, the K–Pg extinction killed off plesiosaurs and the giant marine lizards (Mosasauridae) and devastated fish, sharks, mollusks (especially ammonites, which went extinct) and many species of plankton. It is estimated that 75% or more of all species on Earth vanished. Yet the devastation caused by the extinction also provided evolutionary opportunities. In the wake of the extinction, many groups underwent remarkable adaptive radiations—a sudden and prolific divergence into new forms and species within the disrupted and emptied ecological niches resulting from the event. Mammals in particular diversified in the Paleogene, producing new forms such as horses, whales, bats, and primates. Birds, fish and perhaps lizards also radiated.".
- Cretaceous–Paleogene_extinction_event thumbnail Impact_event.jpg?width=300.
- Cretaceous–Paleogene_extinction_event wikiPageExternalLink studentv.html.
- Cretaceous–Paleogene_extinction_event wikiPageExternalLink 3520837.stm.
- Cretaceous–Paleogene_extinction_event wikiPageExternalLink 061030-dinosaur-killer.html.
- Cretaceous–Paleogene_extinction_event wikiPageExternalLink chicxulub.
- Cretaceous–Paleogene_extinction_event wikiPageExternalLink Chicx_title.html.
- Cretaceous–Paleogene_extinction_event wikiPageExternalLink Dinosaurs-wiped-out-by-asteroid-impact-that-turned-earth-into-a-hellish-place.html.
- Cretaceous–Paleogene_extinction_event wikiPageExternalLink extinction.html.
- Cretaceous–Paleogene_extinction_event wikiPageExternalLink cowen1b.html.
- Cretaceous–Paleogene_extinction_event wikiPageID "44503418".
- Cretaceous–Paleogene_extinction_event wikiPageLength "103552".
- Cretaceous–Paleogene_extinction_event wikiPageOutDegree "337".
- Cretaceous–Paleogene_extinction_event wikiPageRevisionID "683799608".
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink 1980_Mount_St._Helens_eruption.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink 1980_eruption_of_Mount_St._Helens.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Acid_rain.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Adaptive_radiation.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Aerosol.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Albedo.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Alberta.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Algae.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Ammonite.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Ammonites.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Ammonoidea.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Ammonoids.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Angiosperm.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Ankylosaurus.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Antarctic_Circle.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Archosaur.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Archosauromorph.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Archosauromorpha.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Argon–argon_dating.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Asteroid.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Atomic_bombings_of_Hiroshima_and_Nagasaki.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Aves.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Azhdarchidae.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Baptistina_family.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Bat.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Belemnoidea.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Benthic.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Benthic_zone.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Berkeley_Geochronology_Center.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Biocoenosis.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Biodiversity_of_New_Zealand.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Biomass_(ecology).
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Bird.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Bivalve.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Bivalvia.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Boltysh_crater.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Brachiopod.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Brachiopods.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Buffer_solution.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Calcareous.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Calcium.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Calcium_carbonate.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Calcium_sulfate.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Carbonate_platform.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Carnivore.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Carrion.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Cenozoic_life.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Cenozoic_volcanism.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Climate_forcing_agents.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Climate_history.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Cretaceous–Paleogene_boundary.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Dinosaurs.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Evolution_of_mammals.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Hypothetical_impact_events.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Late_Cretaceous_extinctions.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Mesozoic_life.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Mesozoic_volcanism.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Category:Paleogene_extinctions.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Cenozoic.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Cephalopod.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Cephalopoda.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Cetacea.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Cetaceans.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Cetartiodactyla.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Chicxulub,_Yucatán.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Chicxulub_Crater.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Chicxulub_crater.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Chicxulub_impactor.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Chiroptera.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Chondrichthyes.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Choristodera.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Choristodere.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Clade.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Climate_across_Cretaceous-Paleogene_boundary.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Climate_across_Cretaceous–Paleogene_boundary.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Coastal_plain.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Coccolithophore.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Coccolithophorids.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Coleoid.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Coleoidea.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Comet.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Comet_Shoemaker–Levy_9.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Concentration.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Continental_shelf.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Coral.
- Cretaceous–Paleogene_extinction_event wikiPageWikiLink Cretaceous.