The class Gastropoda is a diverse and highly successful class of mollusks within the phylum Mollusca. It contains a vast total of named species, second only to the
extinct and appear only in the fossil record, while 476 are currently extantwith
or without a fossil record.
Gastropoda (previously known as univalves and sometimes spelled "Gasteropoda") are a major part of the phylum Mollusca, and are the most highly diversified class in the phylum, with 65,000 to 80,000 living snail and slug species. The anatomy, behavior, feeding, and reproductive adaptations of gastropods vary significantly from one clade or group to another, so stating many generalities for all gastropods is difficult.
The class Gastropoda has an extraordinary diversification of
parasitic
ones.
Although the name "snail" can be, and often is, applied to all the members of this class, commonly this word means only those species with an external shell big enough that the soft parts can withdraw completely into it. Slugs are gastropods that have no shell or a very small, internal shell; semislugs are gastropods that have a shell that they can partially retreat into but not entirely.
The marine shelled species of gastropods include species such as
larval stage, and is a simple conical structure after that. (Full article...
Photo of an apertural view of Sinotaia aeruginosa... that Sinotaia aeruginosa(shell pictured) is common in restaurants in China?
Drawing of an apertural view of Acmella nana... that Acmella nana(shell pictured) is the smallest known land snail?
Drawing of an apertural view of Semisulcospira libertina... that Semisulcospira libertina(shell pictured) is the most common freshwater snail in Japan?
Drawing of two Carinaria cristata, the upper one without the shell... that the fragile shell of the glassy nautilus Carinaria cristata(pictured) was at one time considered to be worth more than its weight in gold?
Photo of dorsal view of Spurilla neapolitana... that Spurilla neapolitana(pictured) defends itself with stinging cells derived from the sea anemones it eats?
Photo of an apertural view of Pupilla pratensis... that Pupilla pratensis(shell pictured) has long been neglected in the malacological literature?
Map of Lake Skadar... that there are 12 endemic species of freshwater snails in Lake Skadar(map pictured)?
Photo of an apertural view of Balea sarsii... that the land snail Balea sarsii(shell pictured) has been overlooked for a long time?
Photo of an apertural view of Vertigo ultimathule... that the land snail Vertigo ultimathule(shell pictured) is endemic to the northernmost part of Scandinavia?
Drawing of an apertural view of Hinea brasiliana... that flashes of light emitted by the sea snail Hinea brasiliana(shell pictured) may act as a "burglar alarm"?
, a snail found in the north of the Iberian Peninsula, lives primarily in meadows?
... that
Candidula spadae
, a snail native to Central Italy, is at risk in part because of tourist activities?
Drawing of dorsal view of Rathouisia leonina... that the land slug Rathouisia leonina(pictured) from China is carnivorous?
a shell of Hauffenia sp. from Slovakia... that the subterranean freshwater snail Hauffenia sp. from Slovakia(shell pictured) has been an undescribed species since the 1980s?
a live Oxychilus camelinus... that the land snail Oxychilus camelinus(pictured) was described from Lebanon?
shell of holotype of Abbottella calliotropis... that land snails of the genus Abbottella (Abbottella calliotropis shell pictured) live on the islands of Hispaniola and Cuba?
a live Tonna galea out of water... that the snail Tonna galea(pictured) is one of very few species of prosobranch gastropods that are luminescent?
shell of holotype of Notodiscus hookeri heardensis... that the land snail Notodiscus hookeri (shell pictured) has unique shell structure among all gastropods?
a live Zospeum tholussum... that the microscopic cave snail Zospeum tholussum (pictured) is so slow that in a week's time it may only move a few millimeters or centimeters in circles?
... that marine biologist Frederick Bayer discovered 170 new species, including a number of sea snails?
shell of Faunus ater... that the only brackish-water pachychilid species, Faunus ater(shell pictured), has a shell that is unique among all the Cerithioidea?
Drawing of radula of Patella vulgata18 February 2015 - The radular teeth of Patella vulgata are found to have the highest tensile strength among all biomaterials, outperforming even spider silk.
13 February 2013 - The sea slug Goniobranchus reticulatus is the only known animal that autotomizes its penis after mating and it is able to regenerate it subsequently.
Undescribed peltospiroid gastropods Peltospiroidea n. sp. partially covered by individuals of the limpet Lepetodrilus sp. were discovered at East Scotia Ridge E2, a hydrothermal vent in the Scotia Sea
eggs of Pomacea canaliculata 3 December 2010: The first direct evidence (in the animal kingdom) that a proteinase inhibitor from the eggs of Pomacea canaliculata(eggs pictured) interacts as a trypsin inhibitor with the protease of potential predators.
7 November 2010: The Signpost runs a section Good lookin' slugs and snails celebrating three new gastropod-themed Featured pictures.
A list of new Wikipedia articles about gastropods, including those that simply mention the words snail, slug, conch, etc. A bot creates this list, usually every three days.
, one of the bailer shells. This snail is a tropical species that is very large and predatory.
The shell is almost spherical in overall shape with a very large aperture and a low spire. The shell of this species is in demand as a decorative object, and thus is part of the international shell trade.
Request to editors: please do not create any more categories of gastropods by country. Instead create list articles, article with a list of the marine or non-marine gastropods of whichever country or area you are interested in. We would also like to empty and delete the two remaining country categories we have, adding that information to list articles instead. Thank you.
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