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The Cretaceous–Paleogene (K–Pg) extinction event, [a] also known as the Cretaceous–Tertiary (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.
It is now widely accepted that the devastation and climate disruption resulting from the impact was the primary cause of the Cretaceous–Paleogene extinction event, a mass extinction of 75% of plant and animal species on Earth, including all non-avian dinosaurs. [4]
The asteroid that killed most dinosaurs 66 million years ago left behind traces of its own origin. Researchers think they know where the Chicxulub impactor came from based on levels of ruthenium.
Roy Lee Moodie proposed that dinosaurs were killed off by diseases. [7] Examples of the pathological health conditions Moodie thought contributed to the extinction of the dinosaurs included arthritis, dental cavities, fractures, and infections. [19] 1925. Paleobotanist George Wieland hypothesized that Tyrannosaurus rex survived on a diet of eggs.
Now researchers say they have discovered a key element in their extinction. We knew that an asteroid heralded the end of the age of the dinosaurs. Now researchers say they have discovered a key ...
August 16, 2024 at 11:24 AM. German scientists think they've cracked the case on the origins of the giant asteroid that all but wiped out the dinosaurs 66 million years ago. The huge space rock ...
Alvarez hypothesis. 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. Prior to 2013, it was commonly cited as having happened about 65 million years ago, but Renne and ...
Andrew Griffin. August 15, 2024 at 2:09 PM. (The Independent) Scientists may have finally found where the object that wiped out the dinosaurs came from. The mass extinction event that occurred 66 ...