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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.
Luis Walter Alvarez, left, and his son Walter, right, at the K–T Boundary in Gubbio, Italy, 1981. The Alvarez hypothesis posits that the mass extinction of the non-avian dinosaurs and many other living things during the Cretaceous–Paleogene extinction event was caused by the impact of a large asteroid on the Earth.
Why did the dinosaurs go extinct? A new study says it may have been because of their eggs and a long incubation period. The study, published in Proceedings of the National Academy of Sciences ...
He also discusses why the dinosaurs died out while other animals did not, the history of our understanding of the causes of dinosaur extinction, and competing theories. The epilogue covers the rise of mammals after the dinosaur extinction, the subject of Brusatte's next book The Rise and Reign of the Mammals .
A study reveals the chemical makeup of the Chicxulub asteroid that collided with Earth and resulted in the extinction of nearly all dinosaurs 66 million years ago.
Last Day of the Dinosaurs is a 2010 Discovery Channel television documentary about the K-T extinction, which resulted in the extinction of the non-avian dinosaurs. [1] It portrays the Alvarez hypothesis as the cause of extinction. The documentary was released on August 28, 2010 and narrated by Bill Mondy. [2]
Fossil records from North America indicate dinosaurs were still in their prime 66 million years ago, but the asteroid that struck Earth wiped them out anyway.
H. T. Marshall suggested that bombardment from cosmic or ultraviolet radiation caused the extinction of the dinosaurs. [21] 1929. Alexander Audova analyzed the circumstances of the extinction of the dinosaurs and concluded that they were driven extinct gradually when Earth's climate cooled too severely for their embryos to fully develop in the egg.