Version 2014.2 of the

IUCN Red List of Threatened Species The International Union for Conservation of Nature (IUCN) Red List of Threatened Species, also known as the IUCN Red List or Red Data Book, founded in 1964, is the world's most comprehensive inventory of the global conservation status of biologi ...

identified 4574 Critically Endangered

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

subspecies In biological classification, subspecies is a rank below species, used for populations that live in different areas and vary in size, shape, or other physical characteristics (morphology), but that can successfully interbreed. Not all species ...

and

varieties Variety may refer to: Arts and entertainment Entertainment formats * Variety (radio) * Variety show, in theater and television Films * ''Variety'' (1925 film), a German silent film directed by Ewald Andre Dupont * ''Variety'' (1935 film), ...

, stocks and subpopulations. For IUCN lists of critically endangered species by

kingdom Kingdom commonly refers to: * A monarchy ruled by a king or queen * Kingdom (biology), a category in biological taxonomy Kingdom may also refer to: Arts and media Television * ''Kingdom'' (British TV series), a 2007 British television drama s ...

, see: *Animals (kingdom

Animalia Animals are multicellular, eukaryotic organisms in the biological kingdom Animalia. With few exceptions, animals consume organic material, breathe oxygen, are able to move, can reproduce sexually, and go through an ontogenetic stage in ...

) — IUCN Red List Critically Endangered species (Animalia) **Amphibians — List of critically endangered amphibians **Birds — List of critically endangered birds **Fish —

List of critically endangered fishes As of July 2017, the International Union for Conservation of Nature (IUCN) lists 1,000 critically endangered fish species, including 87 which are tagged as ''possibly extinct''. 3.0% of all evaluated fish species are listed as critically endan ...

**Invertebrates —

List of critically endangered invertebrates As of July 2016, the International Union for Conservation of Nature (IUCN) listed 987 critically endangered invertebrate species, including 206 which are tagged as possibly extinct. Of all evaluated invertebrate species, 5.5% are listed as crit ...

***Arthropods — List of critically endangered arthropods ****Insects — List of critically endangered insects ***Molluscs

List of critically endangered molluscs As of September 2016, the International Union for Conservation of Nature (IUCN) lists 581 critically endangered mollusc species, including 117 which are tagged as ''possibly extinct''. 8.0% of all evaluated mollusc species are listed as criti ...

**Mammals —

List of critically endangered mammals As of January 2020, the International Union for Conservation of Nature (IUCN) listed 203 critically endangered Mammalia, mammalian species, including 31 which are tagged as possibly extinct. Of all evaluated mammalian species, 3.5% are listed a ...

**Reptiles —

List of critically endangered reptiles As of September 2016, the International Union for Conservation of Nature (IUCN) lists 196 critically endangered reptile species, including 17 which are tagged as ''possibly extinct''. 3.8% of all evaluated reptile species are listed as critic ...

*Fungi (kingdom

Fungi A fungus ( : fungi or funguses) is any member of the group of eukaryotic organisms that includes microorganisms such as yeasts and molds, as well as the more familiar mushrooms. These organisms are classified as a kingdom, separately from ...

) —

List of fungi by conservation status , the International Union for Conservation of Nature (IUCN) has evaluated the conservation status of 280 fungus species. Previously in the 2017-3 release, the IUCN evaluated the conservation status of 56 fungus species. One subspecies, that of ...

*Plants (kingdom

Plantae Plants are predominantly Photosynthesis, photosynthetic eukaryotes of the Kingdom (biology), kingdom Plantae. Historically, the plant kingdom encompassed all living things that were not animals, and included algae and fungi; however, all curr ...

) —

List of critically endangered plants As of September 2016, the International Union for Conservation of Nature (IUCN) lists 2493 critically endangered plant species, including 145 which are tagged as ''possibly extinct'' or ''possibly extinct in the wild''. 11% of all evaluated pl ...

*Protists (kingdom

Protista A protist () is any eukaryotic organism (that is, an organism whose cells contain a cell nucleus) that is not an animal, plant, or fungus. While it is likely that protists share a common ancestor (the last eukaryotic common ancestor), the excl ...

) —

List of Chromista by conservation status , the International Union for Conservation of Nature (IUCN) has evaluated the conservation status of 15 species within Chromista. The IUCN has not evaluated any protist species other than those in Chromista. No Chromista subspecies or subpopulati ...

References

* IUCN 2014.

. Version 2014.2. Source of the above list
online IUCN Red List
Retrieved 30 August 2014. {{DEFAULTSORT:Red List critically endangered species

See also

References