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As of July 2016, the International Union for Conservation of Nature (IUCN) lists 395 extinct species, 206 possibly extinct species, 15 extinct in the wild species, 8 extinct subspecies, and 5 extinct in the wild subspecies of invertebrate.[1][2]

16 extinct in the wild invertebrate species (0.09%)987 critically endangered invertebrate species (5.6%)1163 endangered invertebrate species (6.6%)2178 vulnerable invertebrate species (12%)1105 near threatened invertebrate species (6.3%)6919 least concern invertebrate species (39%)5278 data deficient invertebrate species (30%)
Invertebrate species (IUCN, 2020.1)
  • 17,646 extant species have been evaluated
  • 12,368 of those are fully assessed[lower-alpha 1]
  • 8024 are not threatened at present[lower-alpha 2]
  • 4328 to 9606 are threatened[lower-alpha 3]
  • 410 to 616 are extinct or extinct in the wild:
    • 395 extinct (EX) species[lower-alpha 4]
    • 15 extinct in the wild (EW)
    • 206 possibly extinct [CR(PE)]
    • 0 possibly extinct in the wild [CR(PEW)]

  1. excludes data deficient evaluations.
  2. NT, LR/cd, LC.
  3. Threatened comprises CR, EN and VU. Upper estimate additionally includes DD.
  4. Chart omits extinct (EX) species

Flatworms


Extinct species


Nemertea species


Extinct species

Possibly extinct species


Annelids


Extinct species


Molluscs



Gastropods


Extinct species

Possibly extinct species

Extinct in the wild species

Extinct subspecies

Extinct in the wild subspecies


Bivalvia


Extinct species

Possibly extinct species

Extinct subspecies


Cnidaria


Possibly extinct species


Arthropods



Centipedes


Possibly extinct species


Seed shrimps


Extinct species


Arachnids


Extinct species

Possibly extinct species


Millipedes


Extinct species

Possibly extinct species


Entognatha


Possibly extinct species


Maxillopoda


Extinct species


Malacostracans


Includes crabs, lobsters, crayfish, shrimp, krill, woodlice, and many others.

Extinct species

Possibly extinct species

Extinct in the wild species


Insects


Extinct species

Possibly extinct species

Extinct in the wild species


See also



References


  1. "IUCN Red List version 2016.1". The IUCN Red List of Threatened Species. International Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 4 July 2016.
  2. "Table 9: Possibly Extinct and Possibly Extinct in the Wild Species (IUCN Red List version 2016-1)". The IUCN Red List of Threatened Species. Union for Conservation of Nature and Natural Resources (IUCN). Retrieved 4 July 2016.
  3. Blakemore (2019). "Extinction of Japan's first formally described earthworm Amynthas japonicus (Horst, 1883) (Annelida, Oligochaeta, Megadrilacea, Megascolecidae)" (PDF). Bull. Kanagawa Mus. 48: 55–60. Retrieved 10 May 2019.
  4. Blakemore (2012). "On Schmarda's lost earthworm and some newly found New Zealand species (Oligochaeta: Megadrilacea: Lumbricidae, Acanthodrilidae, Octochaetidae, & Megascolecidae s. stricto)". Journal of Species Research. JSR. 1 (2): 105–132. doi:10.12651/jsr.2012.1.2.105.
  5. Blakemore, R.J. (2017). "Tokea orthostichon". IUCN Red List of Threatened Species. 2017: e.T103192401A103193535. doi:10.2305/IUCN.UK.2017-2.RLTS.T103192401A103193535.en. Retrieved 16 October 2022.
  6. Blakemore (2019). "Redescription of extinct New Zealand earthworm: Tokea orthostichon (Schmarda, 1861)" (PDF). Bull. Kanagawa Prefectural Museum (N.H.). 42: 61–68. Retrieved 1 March 2019.
  7. Blakemore (2003). "Hypolimnus pedderensis. The IUCN Red List of Threatened Species 2003: e.T41254A10424837". IUCN Red List of Threatened Species. 2003. Retrieved 27 May 2019.



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