population status

Extinct (EX) animals

237 species

A species is extinct when the last existing member dies. Extinction, therefore, becomes a certainty when there are no surviving individuals that can reproduce and create a new generation. A species may become functionally extinct when only a handful of individuals survive, which cannot reproduce due to poor health, age, sparse distribution over a large range, a lack of individuals of both sexes (in sexually reproducing species), or other reasons. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, mammoths, ground sloths, thylacines, trilobites and golden toads.
This is a part of the Wikipedia article used under the Creative Commons Attribution-Sharealike 3.0 Unported License (CC-BY-SA). The full text of the article is here → https://en.wikipedia.org/wiki/Extinction 
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A species is extinct when the last existing member dies. Extinction, therefore, becomes a certainty when there are no surviving individuals that can reproduce and create a new generation. A species may become functionally extinct when only a handful of individuals survive, which cannot reproduce due to poor health, age, sparse distribution over a large range, a lack of individuals of both sexes (in sexually reproducing species), or other reasons. More than 99% of all species that ever lived on Earth, amounting to over five billion species, are estimated to have died out. Notable extinct animal species include non-avian dinosaurs, saber-toothed cats, dodos, mammoths, ground sloths, thylacines, trilobites and golden toads.
This is a part of the Wikipedia article used under the Creative Commons Attribution-Sharealike 3.0 Unported License (CC-BY-SA). The full text of the article is here → https://en.wikipedia.org/wiki/Extinction 
show less
Source