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The K-T extinctions were a global event, so we should examine globally effective agents: geographic change, oceanographic change, climatic change, or an extraterrestrial event. The most recent work on the K-T extinction has centered on two hypotheses that suggest a violent end to the Cretaceous: a large asteroid impact and a giant volcanic ...
Mar 24, 2010 · The Cretaceous-Tertiary extinction event, or the K-T event, is the name given to the die-off of the dinosaurs and other species that took place some 65.5 million years ago. For many...
Feb 23, 2023 · 23 Feb 2023. Vol 379, Issue 6634. pp. 802 - 806. DOI: 10.1126/science.abn2080. A major marine shift. We know that the end-Cretaceous extinction event drove ecological change and species turnover in terrestrial systems, but we know less about how this event may have altered marine systems.
Sep 26, 2019 · The most studied mass extinction, which marked the boundary between the Cretaceous and Paleogene periods about 66 million years ago, killed off the nonavian dinosaurs and made room for...
Mar 5, 2010 · Abstract. The Cretaceous-Paleogene boundary ~65.5 million years ago marks one of the three largest mass extinctions in the past 500 million years. The extinction event coincided with a large asteroid impact at Chicxulub, Mexico, and occurred within the time of Deccan flood basalt volcanism in India.
The Cretaceous–Paleogene (K–Pg) boundary marks Earth’s most recent mass extinction, when >75% of species, including nonavian dinosaurs, went extinct ( 1 ). In the terrestrial realm, the mass extinction was followed by a radiation of modern clades, particularly placental mammals ( 2 ), crown birds ( 3 ), and angiosperms ( 4 ).
The Cretaceous–Paleogene (K–Pg) extinction event, also known as the Cretaceous–Tertiary (K–T) extinction, was a sudden mass extinction of three-quarters of the plant and animal species on Earth, approximately 66 million years ago. The event caused the extinction of all non-avian dinosaurs.
