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Critically endangered (CR) species face an extremely high risk of extinction in the wild. As of January 2020, the International Union for Conservation of Nature (IUCN) listed 203 critically endangered mammalian species, including 31 which are tagged as possibly extinct. [1] [2] Of all evaluated mammalian species, 3.5% are listed as critically ...
All species listed here as extinct (no known individuals remaining) are designated by the International Union for Conservation of Nature (IUCN). Species which are extinct in the wild only reside in captivity. Species listed as possibly extinct are classified as being critically endangered, as it is unknown whether or not these species are ...
Pygmy three-toed sloth, a species of sloth with a conservation status of critically endangered. An IUCN Red List critically endangered (CR or sometimes CE) species is one that has been categorized by the International Union for Conservation of Nature as facing an extremely high risk of extinction in the wild. [1]
As of July 2016, the International Union for Conservation of Nature (IUCN) lists 5278 data deficient invertebrate species. [1] 29% of all evaluated invertebrate species are listed as data deficient. The IUCN also lists 57 invertebrate subspecies as data deficient. No subpopulations of invertebrates have been evaluated by the IUCN.
Critical (Possibly Extinct) CR (PE), a semi-official category introduced by BirdLife International and likely to be adopted by other authorities including the IUCN in the near future. The weight of evidence points against the continuing existence of the taxon, but final surveys are still pending.
In July 2016, the International Union for Conservation of Nature (IUCN) listed 2178 vulnerable invertebrate species. [1] Of all evaluated invertebrate species, 12% are listed as vulnerable. The IUCN also lists 47 invertebrate subspecies as vulnerable. No subpopulations of invertebrates have been evaluated by the IUCN.
In July 2016, the International Union for Conservation of Nature (IUCN) listed 1080 vulnerable arthropod species. [1] Of all evaluated arthropod species, 11% are listed as vulnerable. The IUCN also lists 29 arthropod subspecies as vulnerable. No subpopulations of arthropods have been evaluated by the IUCN.
2 extinct in the wild (EW) 0 possibly extinct [CR(PE)] 0 possibly extinct in the wild [CR ... the International Union for Conservation of Nature ...