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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 ...
It is the second epoch of the Paleogene Period in the modern Cenozoic Era. The name Eocene comes from the Ancient Greek Ἠώς ( Ēṓs, "Dawn") and καινός ( kainós, "new") and refers to the "dawn" of modern ('new') fauna that appeared during the epoch. [ 7][ 8] The Eocene spans the time from the end of the Paleocene Epoch to the ...
Earth formed around 4.54 billion years ago, approximately one-third the age of the universe, by accretion from the solar nebula. [ 4][ 5][ 6] Volcanic outgassing probably created the primordial atmosphere and then the ocean, but the early atmosphere contained almost no oxygen.
On Nov. 20, 1983, ABC aired the two-hour television movie The Day After, which depicts an escalating conflict between the Soviet Union and the U.S. that crosses the point of no return when both ...
40 years ago, a beloved Peoria restaurant was the source of a historic botulism outbreak. Journal Star. Dean Muellerleile, Peoria Journal Star. Updated October 10, 2023 at 4:58 PM.
"E.T. the Extra-Terrestrial" debuted 40 years ago this week, introducing the world to one of the most recognizable little aliens in pop culture. The film tells the story of a friendship between a ...
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 ...
Recorded January 28, 1986. Other offices. 1968 [ 5] –1969: [ 6] Chair of the Republican Governors Association. Ronald Wilson Reagan ( / ˈreɪɡən / ⓘ RAY-gən; February 6, 1911 – June 5, 2004) was an American politician and actor who served as the 40th president of the United States from 1981 to 1989.