Timeline of Cretaceous–Paleogene extinction event research
Timeline of Cretaceous–Paleogene extinction event research
Research timeline.
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Cretaceous–Paleogene extinction event
Mass extinction event about 66 million years ago.
38%
Nadir crater
Undersea impact crater off West African coast.
12%
Chicxulub crater
Prehistoric impact crater in Mexico.
10%
Cretaceous–Paleogene boundary
Geological boundary between time periods.
4.9%
Orthogenesis
Hypothesis that organisms have an innate tendency to evolve towards some goal.
4.6%
Dinosaur
Clade of reptiles.
4.4%
Alvarez hypothesis
Asteroid impact hypothesis.
2.1%
Deccan Traps
Large igneous province in India.
2%
Extinction event
Rapid decrease in Earth's biodiversity.
2%
Asteroid
Minor planet found within the inner Solar System.
1.8%
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