Pyramidula umbilicata
Encyclopedia
Pyramidula umbilicata is a species
of very small air-breathing land snail
, a terrestrial
pulmonate gastropod mollusk or micromollusc in the family Pyramidulidae
.
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 very small air-breathing land snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
, 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 or micromollusc in the family Pyramidulidae
Pyramidulidae
Pyramidulidae is a family of small air-breathing land snails, terrestrial pulmonate gastropod mollusks in the superfamily Pupilloidea.-Anatomy:In this family, the number of haploid chromosomes lies between 26 and 30 ....
.
Shell description
The width of the shell is up to 2.9 mm, the height is up to 1.7 mm.Distribution
This species has a Lusitanian-Atlantic distribution.- Great Britain
- Ireland
- France - in PyreneesPyreneesThe Pyrenees is a range of mountains in southwest Europe that forms a natural border between France and Spain...
- Spain
- Portugal