As of September 2016, the

International Union for Conservation of Nature The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natu ...

(IUCN) lists 535

near threatened A near-threatened species is a species which has been categorized as "Near Threatened" (NT) by the International Union for Conservation of Nature as that may be vulnerable to endangerment in the near future, but it does not currently qualify fo ...

mollusc Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of which are known as molluscs or mollusks (). Around 85,000 extant species of molluscs are recognized. The number of fossil species is esti ...

species. 7.4% of all evaluated mollusc species are listed as near threatened. The IUCN also lists nine mollusc subspecies as near threatened. No subpopulations of molluscs have been evaluated by the IUCN. This is a complete list of near threatened mollusc species and subspecies evaluated by the IUCN.

Gastropods The gastropods (), commonly known as snails and slugs, belong to a large taxonomic class of invertebrates within the phylum Mollusca called Gastropoda (). This class comprises snails and slugs from saltwater, from freshwater, and from land. Ther ...

There are 477 species and four subspecies of gastropod assessed as near threatened.

Stylommatophora Stylommatophora is an orderPhilippe Bouchet, Jean-Pierre Rocroi, Bernhard Hausdorf, Andrzej Kaim, Yasunori Kano, Alexander Nützel, Pavel Parkhaev, Michael Schrödl and Ellen E. Strong. 2017. Revised Classification, Nomenclator and Typification ...

Stylommatophora includes the majority of land snails and slugs. There are 250 species and four subspecies in the order Stylommatophora assessed as near threatened.

Zonitids

Clausiliids

Species Subspecies *'' Alopia bielzii clathrata'' *'' Macrogastra lineolata euzieriana''

Helminthoglyptids

Camaenids

Species Subspecies *'' Glyptorhagada wilkawillina umbilicata''

Vertiginids

Cochlicellids

Trissexodontids

Helicids

Hygromiids

Species Subspecies *'' Xerocrassa montserratensis betulonensis''

Vitrinids

Chondrinids

Enids

Argnids

Other Stylommatophora species

Littorinimorpha Littorinimorpha is a large order of snails, gastropods, consisting primarily of sea snails ( marine species), but also including some freshwater snails ( aquatic species) and land snails (terrestrial species).Bouchet P. & Rocroi J.-P. (Ed.); Fr� ...

There are 115 species in the order Littorinimorpha assessed as near threatened.

Hydrobiids

Bithyniids

Moitessieriids

Assimineids

*'' Omphalotropis circumlineata'' *'' Omphalotropis zelriolata''

Pomatiopsids

Stenothyrids

*'' Stenothyra khongi'' *'' Stenothyra wykoffi''

Sorbeoconcha Sorbeoconcha is a taxonomic clade of snails, i.e. gastropods, mainly marine species with gills and opercula, within the clade Caenogastropoda. The taxon Sorbeoconcha was named by Winston Ponder and David R. Lindberg in 1997. Taxonomy 1 ...

Architaenioglossa Architaenioglossa is a taxonomic group of snails which have gills and often an operculum. They are primarily land and freshwater gastropod mollusks within the clade Caenogastropoda. This " informal group" has been shown to be polyphyletic in a s ...

There are 41 species in the order Architaenioglossa assessed as near threatened.

Pupinids

*''

Pupina coxeni ''Pupina coxeni'' is a species of land snail with an operculum, a terrestrial gastropod mollusk in the family Pupinidae. This species is endemic Endemism is the state of a species being found in a single defined geographic location, s ...

'' *'' Pupina pfeifferi''

Diplommatinids

Aciculids

Viviparids

Ampullariids

Craspedopomatids

*''

Craspedopoma hespericum ''Craspedopoma hespericum'' is a species of tropical land snails with an operculum, terrestrial gastropod mollusks in the family Craspedopomatidae. This species is endemic to Portugal Portugal, officially the Portuguese Republic ( pt, Re ...

'' *''

Craspedopoma monizianum ''Craspedopoma'' is a genus of operculate land snails in the family Craspedopomatidae. The genus is extant but there is at least four fossil species. ''C. conoidale'' is from the Miocene of Italy. ''C. elegans'' is from the Ulm region of Germany ...

Lower Heterobranchia Lower Heterobranchia, also known as the Allogastropoda, is a group of rather specialized, highly evolved sea slugs and sea snails, ( marine gastropod mollusks) within the subclass Heterobranchia. WoRMS (2020). "Lower Heterobranchia". Accessed ...
species

*'' Valvata rhabdota'' *'' Valvata stenotrema''

Cycloneritimorpha Cycloneritida (nerites and false-limpets) is an order of land snails, freshwater snails, and sea snails.MolluscaBase eds. (2020). MolluscaBase. Cycloneritida. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/ap ...

Hygrophila species

Neogastropoda Neogastropoda is an order of sea snails, both freshwater and marine gastropod molluscs. Description The available fossil record of Neogastropoda is relatively complete, and supports a widely accepted evolutionary scenario of an Early Creta ...

There are 29 species in the order Neogastropoda assessed as near threatened.

Bivalvia Bivalvia (), in previous centuries referred to as the Lamellibranchiata and Pelecypoda, is a class of marine and freshwater molluscs Mollusca is the second-largest phylum of invertebrate animals after the Arthropoda, the members of w ...

There are 57 species and five subspecies in the class Bivalvia assessed as near threatened.

Unionida Unionida is a monophyletic order of freshwater mussels, aquatic bivalve molluscs.Bieler R., Carter J.G. & Coan E.V. (2010). ''Classification of Bivalve families''. pp. 113–133, in: Bouchet P. & Rocroi J.-P. (2010), ''Nomenclator of Bivalve F ...

There are 49 species and five subspecies in the order Unionoida assessed as near threatened.

Unionids

Species Subspecies

Hyriids

* Southern river mussel ''(Hyridella narracanensis)'' * South Esk freshwater mussel ''(Velesunio moretonicus)''

Cardiida Cardiida is an order of bivalves belonging to the class Bivalvia. Families: * Cardiidae * Donacidae * Ephippiodontidae * Ferganoconchidae * Glaucomyidae * Goniocardiidae * Icanotiidae * Lahillidae * Limnocyrenidae * Lutetidae * Psammob ...

Venerida Venerida (formerly Veneroida) is an order of mostly saltwater but also some freshwater bivalve molluscs. This order includes many familiar groups such as many clams that are valued for food and a number of freshwater bivalves. Since the 2000s, ...

Cephalopods A cephalopod is any member of the molluscan class Cephalopoda (Greek plural , ; "head-feet") such as a squid, octopus, cuttlefish, or nautilus. These exclusively marine animals are characterized by bilateral body symmetry, a prominent head, an ...

* Giant Australian cuttlefish ''(Sepia apama)''

References

*Molluscs Near threatened molluscs Near threatened molluscs {{bots, deny=BG19bot,Yobot