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The gastropod shell is part of the body of many gastropods, including snails, a kind of mollusc. The shell is an exoskeleton , which protects from predators, mechanical damage, and dehydration, but also serves for muscle attachment and calcium storage.
Shell of marine snail Lunella torquata with the calcareous operculum in place Gastropod shell of the freshwater snail Viviparus contectus with corneous operculum in place. An operculum (Latin for 'cover, covering'; pl. opercula or operculums) is a corneous or calcareous anatomical structure like a trapdoor that exists in many (but not all) groups of sea snails and freshwater snails, and also ...
This is the largest extant snail (shelled gastropod) species in the world, and arguably the largest (heaviest) gastropod in the world. Although the shell itself is quite well known to shell collectors because of its extraordinary size, little is known about the ecology and behavior of the species, [ 7 ] except for one study about its feeding ...
A shell of Aporrhais pespelecani, from Catalonia, Spain. Aporrhais pespelecani, common name the "pelican's foot" (or more precisely "common pelican's foot" to distinguish it from congeners), is a species of sea snail, a marine gastropod mollusk in the family Aporrhaidae.
Phasianotrochus bellulus, common name the necklace shell, is a species of sea snail, a marine gastropod mollusk in the family Trochidae, the top snails. [ 1 ] [ 2 ] Description
Turritellidae, with the common name "tower shells" or "tower snails", is a taxonomic family of small- to medium-sized sea snails, marine gastropod molluscs in the Sorbeoconcha clade. They are filter feeders ; this method of feeding is somewhat unusual among gastropod mollusks, but is very common in bivalves .
shell of Rhodacmea filosa 31 May 2011 - the Wicker ancylid Rhodacmea filosa, (shell pictured) listed as extinct by the IUCN Red List, has been rediscovered. New gastropod taxa described in 2011; 18 April 2011 - Research on the mating of Chelidonura sandrana contradicts the traditional theory about mating in simultaneous hermaphrodites.
A shell of Zonulispira chrysochildosa. Turrid, plural turrids, is a common name for a very large group of predatory sea snails, marine gastropod mollusks which until recently were all classified in the family Turridae. However, recently the family was discovered to be polyphyletic and therefore was split into a number of families.