Search results
Results From The WOW.Com Content Network
Pulmonate land snails usually have two sets of tentacles on their head: the upper pair have an eye at the end; the lower pair are for olfaction. [1]In anatomy, an eyestalk (sometimes spelled eye stalk and also known as an ommatophore) is a protrusion that extends an eye away from the body, giving the eye a better field of view. [1]
Pulmonata or pulmonates is an informal group (previously an order, and before that, a subclass) of snails and slugs characterized by the ability to breathe air, by virtue of having a pallial lung instead of a gill, or gills. The group includes many land and freshwater families, and several marine families.
Stylommatophora is the most diverse group of land snails and slugs. Pallial cavity forms a spacious, air-filled lung. Anus is located on the right side close to the pneumostome. Operculum is missing. Two pairs of tentacle are retractable and the posterior pair bears eyes on the tips. Radula typically has many small, quite uniform teeth per row.
In terrestrial pulmonate gastropods, eye spots are present at the tips of the tentacles in the Stylommatophora or at the base of the tentacles in the Basommatophora.These eye spots range from simple ocelli that cannot project an image (simply distinguishing light and dark), to more complex pit and even lens eyes. [6]
The pneumostome or breathing pore is a respiratory opening of the external body anatomy of an air-breathing land slug or land snail. It is a part of the respiratory system of gastropods. It is an opening in the right side of the mantle of a stylommatophoran snail or slug.
Cerastidae is a family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the order Stylommatophora. [2] Genera. Achatinelloides Nevill, 1878 [3]
Giant African land snails first showed up in the U.S. in Miami in 1966, triggering an extensive eradication program that lasted nine years. But the ravenous snails returned to Miami in 2011 ...
Stenotrema cohuttense, also known as the Cohutta slitmouth, is a rare, range-restricted species of pulmonate land snail in the family Polygyridae. The species is named after the Cohutta Mountains in Georgia. [1]