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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.
The timeline of human evolution outlines the major events in the evolutionary lineage of the modern human species, Homo sapiens, throughout the history of life, beginning some 4 billion years ago down to recent evolution within H. sapiens during and since the Last Glacial Period . It includes brief explanations of the various taxonomic ranks in ...
Late Devonian: 375 million years ago, 75% of species lost, including most trilobites. End Permian, The Great Dying: 251 million years ago, 96% of species lost, including tabulate corals, and most trees and synapsids. End Triassic: 200 million years ago, 80% of species lost, including all conodonts. End Cretaceous: 66 million years ago, 76% of ...
6000 BC: Evidence of habitation at the current site of Aleppo dates to about c. 8,000 years ago, although excavations at Tell Qaramel, 25 kilometres (16 mi) north of the city show the area was inhabited about 13,000 years ago, [121] Carbon-14 dating at Tell Ramad, on the outskirts of Damascus, suggests that the site may have been occupied since ...
The Neolithic Revolution, also known as the First Agricultural Revolution, was the wide-scale transition of many human cultures during the Neolithic period in Afro-Eurasia from a lifestyle of hunting and gathering to one of agriculture and settlement, making an increasingly large population possible. [ 1 ]
The Nordstrom Anniversary Sale is in full swing and if you haven't shopped yet, there's still time. We combed through more than 5,000 items to find you the best deals under $50 — we're talking ...
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