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The Cretaceous–Paleogene (K–Pg) extinction event, [a] also known as the K–T extinction, [b] was the mass extinction of three-quarters of the plant and animal species on Earth [2] [3] approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
N. sp. One of the most common aquatic plants in Hell Creek. Nelumbium: N. montanum. An aquatic angiosperm, closely related to lotus. Uncommon. Nordenskioldia: N. borealis. A fossil fruit likely to belonging to Zizyphoides flabella. [136] Paranymphaea. P. hastata. Despite the name, it's not related to extant genus Nymphaea. Palaeoaster: P. porosia
Download as PDF; Printable version; ... extinction. Subdivision of the Cretaceous according to the ICS, as of 2023. [1]
Summer: A poll of more than 600 paleontologists and other Earth scientists found 24% to support the impact hypothesis of the Cretaceous–Paleogene extinction event, 38% agreed that the impact occurred but was not the true cause of the mass extinction, 26% denied that any impact had occurred and 12% completely denied the occurrence of a mass ...
The Cretaceous Terrestrial Revolution (abbreviated KTR), also known as the Angiosperm Terrestrial Revolution (ATR) by authors who consider it to have lasted into the Palaeogene, [1] describes the intense floral diversification of flowering plants (angiosperms) and the coevolution of pollinating insects, as well as the subsequent faunal radiation of frugivorous, nectarivorous and insectivorous ...
Biological taxa that went extinct during the Paleogene period of geologic time, between 66 and 23 million years ago during the early Cenozoic Era See also the preceding Category:Cretaceous extinctions and the succeeding Category:Neogene extinctions
By the Cretaceous period, abelisauroids had apparently become extinct in Asia and North America, possibly due to competition from tyrannosauroids. However, advanced abelisauroids of the family Abelisauridae persisted in the southern continents until the Cretaceous–Paleogene extinction event 66 million years ago.
The K–Pg boundary marks the end of the Cretaceous Period, the last period of the Mesozoic Era, and marks the beginning of the Paleogene Period, the first period of the Cenozoic Era. Its age is usually estimated at 66 million years, [2] with radiometric dating yielding a more precise age of 66.043 ± 0.043 Ma. [3]