
Extinction - Wikipedia
Species that are not globally extinct are termed extant. Those species that are extant, yet are threatened with extinction, are referred to as threatened or endangered species. The dodo of Mauritius, shown …
Extinction | Definition & Examples | Britannica
Apr 11, 2026 · Extinction, in biology, is the dying out or extermination of a species. It occurs when species are diminished because of environmental forces (natural or human-made) or because of …
Extinction - National Geographic Society
Oct 19, 2023 · Extinction is the dying out of a species. Extinction plays an important role in the evolution of life because it opens up opportunities for new species to emerge.
What Is Extinction? Definition, Causes, and Types ...
Mar 8, 2026 · Extinction is the permanent disappearance of a species from Earth, meaning every last individual has died and no new members can be born. In biology, it is literally defined as the absence …
Extinction Events - Fossils and Paleontology (U.S. National ...
Feb 28, 2025 · Extinction is the flip side of evolution. Just as every organism that lives will die, every species that evolves will eventually go extinct. In some cases, it is subtle, as when one species is …
Extinction - New World Encyclopedia
In biology and ecology, extinction is the ceasing of existence of a species or a higher taxonomic unit (taxon), such as a phylum or class. The moment of extinction is generally considered to be the death …
Extinction Over Time - Smithsonian National Museum of Natural ...
Extinction is the death of all members of a species of plants, animals, or other organisms. One of the most dramatic examples of a modern extinction is the passenger pigeon.