This is a list of extinction events, both mass and minor: [1] Climate change due to change of ocean circulation patterns. Milankovitch cycles may have also contributed [11] Chicxulub impactor; the volcanism which resulted in the formation of the Deccan Traps may have contributed. [13]

An extinction event (also known as a mass extinction or biotic crisis) is a widespread and rapid decrease in the biodiversity on Earth. Such an event is identified by a sharp fall in the diversity and abundance of multicellular organisms.

There have been five big mass extinctions in Earth's history – these are called the "Big Five". Understanding the reasons and timelines of these events is important to understand the speed and scale of species extinctions today. When and why did these mass extinction events happen? What is a mass extinction?

2023年2月17日 · An event is a mass extinction if the earth loses more than 75% of its species in 2.8 million years or less. These time periods are usually associated with major environmental changes, such as volcanos erupting, climate change, and asteroid impacts.

2024年12月14日 · mass extinction event, any circumstance that results in the loss of a significant portion of Earth’s living species across a wide geographic area within a relatively short period of geologic time. Mass extinction events are extremely rare.

2023年12月24日 · At least five times, a catastrophe has killed off the vast majority of Earth’s species. As scientists say we’re in a sixth mass extinction, what can we learn from the past?

2021年11月8日 · There’s a scientific consensus that the planet has undergone five major mass extinction events within the last 450 million years, with each destroying 70-95% of the species of plants, animals and microorganisms that existed previously.

2021年5月17日 · The death of the dinosaurs was just one of five global events that saw millions of species wiped out. How do these events happen? And how can we stop it happening again?

Mass extinction events, such as the one that killed the non-avian dinosaurs, have shaped the course of life on Earth. Learn more about five of the biggest mass extinctions in Earth’s history—and about the one that is overtaking Earth today.

The most notable of these is the Permian-Triassic mass extinction, which occurred approximately 252 million years ago and is recognized as the largest extinction event in Earth's history.