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30 maj 2018 · Abstract. The Cretaceous/Palaeogene mass extinction eradicated 76% of species on Earth 1, 2. It was caused by the impact of an asteroid 3, 4 on the Yucatán carbonate platform in the...
1 wrz 2022 · On land, gymnosperms and angiosperms, groups that include most modern trees, barely survived. The cause of the Cretaceous-Tertiary (K-T) extinction or Cretaceous-Paleogene (KPg) extinction, as it is interchangeably called, has been hotly debated within the scientific community.
A new study led by Yale University confirms a long-held theory about the last great mass extinction event in history and how it affected Earth’s oceans. The findings may also answer questions about how marine life eventually recovered.
The extinction occurred at the end of the Cretaceous Period, about 65.5 million years ago. Who became extinct? In addition to the non-avian dinosaurs, vertebrates that were lost at the end of the Cretaceous include the flying pterosaurs, and the mosasaurs, plesiosaurs and ichthyosaurs of the oceans.
8 gru 2021 · The end-Cretaceous Chicxulub impact triggered Earth’s last mass-extinction, extinguishing ~ 75% of species diversity and facilitating a global ecological shift to mammal-dominated biomes.
5 wrz 2013 · Paleontologists and geologists have identified the triggers for the end-Cretaceous mass extinction that devastated life on Earth 66 million years ago, yet, even with that knowledge, we...
2 dni temu · This event is possibly best known for wiping out the dinosaurs, and is one of the most well-studied mass extinctions in Earth’s history. Geological evidence shows two possible contributors to the extinction. First, the Earth was struck by an object from space, resulting in a massive impact event.
