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  2. Cretaceous–Paleogene extinction event - Wikipedia

    en.wikipedia.org/wiki/Cretaceous–Paleogene...

    Alternatively, interpretation based on the fossil-bearing rocks along the Red Deer River in Alberta, Canada, supports the gradual extinction of non-avian dinosaurs; during the last 10 million years of the Cretaceous layers there, the number of dinosaur species seems to have decreased from about 45 to approximately 12. Other scientists have made ...

  3. Dinosaur - Wikipedia

    en.wikipedia.org/wiki/Dinosaur

    The relatively large size of most dinosaurs and the low diversity of small-bodied dinosaur species at the end of the Cretaceous may have contributed to their extinction; [277] the extinction of the bird lineages that did not survive may also have been caused by a dependence on forest habitats or a lack of adaptations to eating seeds for survival.

  4. Timeline of the evolutionary history of life - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_the...

    Last giant monitor lizards (Varanus priscus) die out. 35-25 ka Extinction of Neanderthals. Domestication of dogs. 15 ka Last woolly rhinoceros (Coelodonta antiquitatis) are believed to have gone extinct. 11 ka Short-faced bears vanish from North America, with the last giant ground sloths dying out. All Equidae become extinct in North America.

  5. Timeline of Cretaceous–Paleogene extinction event research

    en.wikipedia.org/wiki/Timeline_of_Cretaceous...

    He argued that feeding its great bulk would have led it to consume the entire last generation of dinosaurs before they could even hatch, leading to their extinction. [20] He also suggested that mammals may have driven the dinosaurs extinct by eating all of their eggs. [7] 1928. L. Müller proposed that volcanic eruptions drove the dinosaurs ...

  6. Mesozoic - Wikipedia

    en.wikipedia.org/wiki/Mesozoic

    The Mesozoic Era [3] is the era of Earth's geological history, lasting from about , comprising the Triassic, Jurassic and Cretaceous Periods.It is characterized by the dominance of gymnosperms such as cycads, ginkgoaceae and araucarian conifers, and of archosaurian reptiles such as the dinosaurs; a hot greenhouse climate; and the tectonic break-up of Pangaea.

  7. Scientists believe they have finally uncovered what killed ...

    www.aol.com/news/scientists-believe-finally...

    It has been a long-held belief that it was the impact of an asteroid that ended the age of dinosaurs, but researchers have revealed that the one key element may have played a larger part than ...

  8. Cretaceous - Wikipedia

    en.wikipedia.org/wiki/Cretaceous

    The Cretaceous (IPA: / k r ɪ ˈ t eɪ ʃ ə s / krih-TAY-shəss) [2] is a geological period that lasted from about 143.1 to 66 million years ago (Mya). It is the third and final period of the Mesozoic Era, as well as the longest.

  9. Fossilized poop reveals secrets of how dinosaurs came to ...

    www.aol.com/fossilized-poop-reveals-secrets...

    The supremacy of the dinosaurs endured until an asteroid that struck off the coast of what’s now Mexico 66 million years ago doomed the dinosaurs to extinction.