Sphincterochila baetica
Encyclopedia
Sphincterochila baetica is a species
of air-breathing land snail
, a terrestrial
pulmonate gastropod mollusk in the family Sphincterochilidae
.
is globose, solid, whitish ash-color. The shell has 5 whorls
which are very slowly increasing, the upper ones carious-rugulose, the penultimate about as broad as the last. The last whorl
is more or less angulated on the periphery and rounded in front.
The aperture
is widely lunar, angulated exteriorly. The peristome is internally sublabiate.
The width of the shell is 25 mm.
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...
of air-breathing land snail
Land snail
A land snail is any of the many species of snail that live on land, as opposed to those that live in salt water and fresh water. Land snails are terrestrial gastropod mollusks that have shells, It is not always an easy matter to say which species are terrestrial, because some are more or less...
, a terrestrial
Terrestrial animal
Terrestrial animals are animals that live predominantly or entirely on land , as compared with aquatic animals, which live predominantly or entirely in the water , or amphibians, which rely on a combination of aquatic and terrestrial habitats...
pulmonate gastropod mollusk in the family Sphincterochilidae
Sphincterochilidae
Sphincterochilidae is a taxonomic family of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Helicoidea ....
.
Distribution
Spain, Morocco, Algeria.Shell description
The shellGastropod shell
The gastropod shell is a shell which is part of the body of a gastropod or snail, one kind of mollusc. The gastropod shell is an external skeleton or exoskeleton, which serves not only for muscle attachment, but also for protection from predators and from mechanical damage...
is globose, solid, whitish ash-color. The shell has 5 whorls
Whorl (mollusc)
A whorl is a single, complete 360° revolution or turn in the spiral growth of a mollusc shell. A spiral configuration of the shell is found in of numerous gastropods, but it is also found in shelled cephalopods including Nautilus, Spirula and the large extinct subclass of cephalopods known as the...
which are very slowly increasing, the upper ones carious-rugulose, the penultimate about as broad as the last. The last whorl
Body whorl
Body whorl is part of the morphology of a coiled gastropod mollusk.- In gastropods :In gastropods, the body whorl, or last whorl, is the most recently-formed and largest whorl of a spiral or helical shell, terminating in the aperture...
is more or less angulated on the periphery and rounded in front.
The aperture
Aperture (mollusc)
The aperture is an opening in certain kinds of mollusc shells: it is the main opening of the shell, where part of the body of the animal emerges for locomotion, feeding, etc....
is widely lunar, angulated exteriorly. The peristome is internally sublabiate.
The width of the shell is 25 mm.
External links
- http://www.animalbase.uni-goettingen.de/zooweb/servlet/AnimalBase/home/species?id=2672
- George Washington TryonGeorge Washington TryonGeorge Washington Tryon, Jr. was an American malacologist who worked at the Academy of Natural Sciences in Philadelphia.- Biography :George Washington Tryon was the son of Edward K. Tryon and Adeline Savidt...
, Jr. 1887. Manual of Conchology. Second series: Pulmonata. Volume 3. Helicidae - Volume I. Plate 2, figure 36-37..