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Least concern (LC): 3,306 species. Data deficient (DD): 872 species. Mammalian species (IUCN, 2020-1) 5850 extant species have been evaluated. 4978 of those are fully assessed a. 3651 are not threatened at present b. 1244 to 2116 are threatened c. 81 to 83 are extinct or extinct in the wild: 81 extinct (EX) species d.
This page features lists of species and organisms that have become extinct. The reasons for extinction range from natural occurrences, such as shifts in the Earth's ecosystem or natural disasters, to human influences on nature by the overuse of natural resources, hunting and destruction of natural habitats.
Insect species (IUCN, 2016.1) 5993 extant species have been evaluated; 4291 of those are fully assessed [a] 3144 are not threatened at present [b] 1146 to 2848 are threatened [c] 59 to 105 are extinct or extinct in the wild: 58 extinct (EX) species [d] 1 extinct in the wild (EW) 46 possibly extinct [CR(PE)] 0 possibly extinct in the wild [CR(PEW)]
Extinction is the termination of a taxon by the death of its last member. A taxon may become functionally extinct before the death of its last member if it loses the capacity to reproduce and recover. Because a species' potential range may be very large, determining this moment is difficult, and is usually done retrospectively.
Tennessee, Cumberland, Ohio, and Wabash River systems [ 192 ] Extinct in 1936 due to loss of habitat through impoundment or channelization. [ 8 ] Sampson's pearly mussel. Epioblasma sampsonii. Kentucky, Illinois, and Indiana [ 193 ] Extinct in the 1930s or 1940s due to habitat destruction and fragmentation.
About 129 species of birdshave become extinctsince 1500,[1]and the rate of extinction seems to be increasing.[2] The situation is exemplified by Hawaii, where 30% of all known recently extinct bird taxaoriginally lived.[3] Other areas, such as Guam, have also been hit hard; Guam has lost over 60% of its native bird taxa in the last 30 years ...
Amphibian species (IUCN, 2016-2) 6492 extant species have been evaluated; 4925 of those are fully assessed [a] 2860 are not threatened at present [b] 2063 to 3630 are threatened [c] 35 to 148 are extinct or extinct in the wild: 33 extinct (EX) species [d] 2 extinct in the wild (EW) 113 possibly extinct [CR(PE)] 0 possibly extinct in the wild ...
According to a 2023 study published in PNAS, at least 73 genera of animals have gone extinct since 1500. If humans had never existed, the study estimates it would have taken 18,000 years for the same genera to have disappeared naturally, leading the authors to conclude that "the current generic extinction rates are 35 times higher than expected ...