411 REFERENCE · Wiktionary
Cretaceous–Paleogene extinction event
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English
Noun
en noun Cretaceous–Paleogene extinction event
The mass extinction of the majority of plant and animal species on Earth including all non-avian dinosaurs, which took place 65.5 million years ago marking the end of the Cretaceous period, and is widely accepted as having been caused by an impact event.
Synonyms
en K-T extinction event
en K/T extinction event
Hypernyms
en extinction event
See also
en K-T boundary
Further reading
Cretaceous–Paleogene extinction event
en Geology Paleontology