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The snail's oesophageal gland houses symbiotic gammaproteobacteria from which the snail appears to obtain its nourishment. This species is considered to be one of the most peculiar deep-sea hydrothermal-vent gastropods, and it is the only known extant animal that incorporates iron sulfide into its skeleton (into both its sclerites and into its ...
The foot is also unusual, being armored with iron-mineralised sclerites. The snail's oesophageal gland houses symbiotic gammaproteobacteria from which the snail appears to obtain its nourishment. This species is considered to be one of the most peculiar deep-sea hydrothermal-vent gastropods, and it is the only known extant animal that ...
A snail is a shelled gastropod. The name is most often applied to land snails , terrestrial pulmonate gastropod molluscs . However, the common name snail is also used for most of the members of the molluscan class Gastropoda that have a coiled shell that is large enough for the animal to retract completely into.
The anatomy of a common air-breathing land snail: much of this anatomy does not apply to gastropods in other clades or groups. Snails are distinguished by an anatomical process known as torsion , where the visceral mass of the animal rotates 180° to one side during development, such that the anus is situated more or less above the head.
Planorbidae, common name the ramshorn snails or ram's horn snails, is a family of air-breathing freshwater snails, aquatic pulmonate gastropod molluscs.Unlike most molluscs, the blood of ram's horn snails contains iron-based hemoglobin instead of copper-based hemocyanin. [3]
This snail lives in places such as swampy meadows and ditches. [9] Omphiscola glabra is said to occur in small areas of standing water that have a lot of vegetation such as swamps, and also in standing forest waters with leaf litter, often in water with organic iron contents and low calcium contents. [6] [clarification needed]
The rosy wolfsnail was introduced into Hawaii in 1955 as a biological control for the invasive African land snail, Lissachatina fulica. [3] This snail is responsible for the extinction of an estimated eight native snail species in Hawaii. [4] This has caused the snail to be added to the IUCN's top 100 most invasive species. [5]
Cerion snail shells collected on Andros Island, Bahamas. Note variation in morphology from ridged to smooth, color in degree of stripedness, and length to width ratio. Scale at bottom is in centimeters. Cerion is one of the most morphologically diverse genera among land snails.