Matches in DBpedia 2014 for { <http://dbpedia.org/resource/Cretaceous–Paleogene_extinction_event> ?p ?o. }
Showing items 1 to 48 of
48
with 100 items per page.
- Cretaceous–Paleogene_extinction_event abstract "The Cretaceous–Paleogene (K–Pg) extinction event, formerly 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 65 million years (Mya) ago. It marked the end of the Cretaceous period and with it, the entire Mesozoic Era, opening the Cenozoic Era which 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 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, and/or sea level change.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; mammals, pterosaurs, birds, lizards, insects, and plants. In the oceans, the K–Pg extinction devastated the giant marine lizards (Mosasauridae), plesiosaurs, fish, sharks, mollusks (especially ammonites) 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 wikiPageID "5787".
- Cretaceous–Paleogene_extinction_event wikiPageRevisionID "606182170".
- Cretaceous–Paleogene_extinction_event subject Category:Climate_forcing_agents.
- Cretaceous–Paleogene_extinction_event subject Category:Climate_history.
- Cretaceous–Paleogene_extinction_event subject Category:Cretaceous_extinctions.
- Cretaceous–Paleogene_extinction_event subject Category:Cretaceous–Paleogene_boundary.
- Cretaceous–Paleogene_extinction_event subject Category:Dinosaurs.
- Cretaceous–Paleogene_extinction_event subject Category:Evolutionary_biology.
- Cretaceous–Paleogene_extinction_event subject Category:Extinction_events.
- Cretaceous–Paleogene_extinction_event subject Category:Graphical_timelines.
- Cretaceous–Paleogene_extinction_event subject Category:Hypothetical_impact_events.
- Cretaceous–Paleogene_extinction_event subject Category:Mammals.
- Cretaceous–Paleogene_extinction_event subject Category:Paleogene.
- Cretaceous–Paleogene_extinction_event subject Category:Paleontology.
- Cretaceous–Paleogene_extinction_event subject Category:Planetary_science.
- Cretaceous–Paleogene_extinction_event subject Category:Volcanism.
- Cretaceous–Paleogene_extinction_event comment "The Cretaceous–Paleogene (K–Pg) extinction event, formerly 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 65 million years (Mya) ago.".
- Cretaceous–Paleogene_extinction_event label "Cretaceous–Paleogene extinction event".
- Cretaceous–Paleogene_extinction_event label "Estinzione di massa del Cretaceo-Paleocene".
- Cretaceous–Paleogene_extinction_event label "Extinción masiva del Cretácico-Terciario".
- Cretaceous–Paleogene_extinction_event label "Extinction Crétacé-Tertiaire".
- Cretaceous–Paleogene_extinction_event label "Extinção do Cretáceo-Paleogeno".
- Cretaceous–Paleogene_extinction_event label "K-T境界".
- Cretaceous–Paleogene_extinction_event label "Kreide-Tertiär-Grenze".
- Cretaceous–Paleogene_extinction_event label "Krijt-Paleogeengrens".
- Cretaceous–Paleogene_extinction_event label "Wymieranie kredowe".
- Cretaceous–Paleogene_extinction_event label "Мел-палеогеновое вымирание".
- Cretaceous–Paleogene_extinction_event label "انقراض العصر الطباشيري-الثلاثي".
- Cretaceous–Paleogene_extinction_event label "白垩纪－第三纪灭绝事件".
- Cretaceous–Paleogene_extinction_event sameAs Cretaceous%E2%80%93Paleogene_extinction_event.
- Cretaceous–Paleogene_extinction_event sameAs Vymírání_na_konci_křídy.
- Cretaceous–Paleogene_extinction_event sameAs Kreide-Tertiär-Grenze.
- Cretaceous–Paleogene_extinction_event sameAs Extinción_masiva_del_Cretácico-Terciario.
- Cretaceous–Paleogene_extinction_event sameAs Kretazeo-Tertziarioko_iraungipen_masiboa.
- Cretaceous–Paleogene_extinction_event sameAs Extinction_Crétacé-Tertiaire.
- Cretaceous–Paleogene_extinction_event sameAs Peristiwa_kepunahan_Kapur–Paleogen.
- Cretaceous–Paleogene_extinction_event sameAs Estinzione_di_massa_del_Cretaceo-Paleocene.
- Cretaceous–Paleogene_extinction_event sameAs K-T境界.
- Cretaceous–Paleogene_extinction_event sameAs 백악기-제3기_대멸종.
- Cretaceous–Paleogene_extinction_event sameAs Krijt-Paleogeengrens.
- Cretaceous–Paleogene_extinction_event sameAs Wymieranie_kredowe.
- Cretaceous–Paleogene_extinction_event sameAs Extinção_do_Cretáceo-Paleogeno.
- Cretaceous–Paleogene_extinction_event sameAs Q55811.
- Cretaceous–Paleogene_extinction_event sameAs Q55811.
- Cretaceous–Paleogene_extinction_event wasDerivedFrom Cretaceous–Paleogene_extinction_event?oldid=606182170.
- Cretaceous–Paleogene_extinction_event depiction Impact_event.jpg.
