Pyramidula pusilla
Encyclopedia
Pyramidula pusilla is a species
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 micromollusk
Micromollusk
A micromollusk is a descriptive term for a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also reach adult size at very small...

 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 2.95 mm, the height is up to 2.25 mm.

Distribution

The geographical distribution of this species is Mediterranean and Alpine.

Western Europe:

Central Europe:
    • Czech Republic
    • Slovakia


Mediterranean:
    • France - in Pyrenees
      Pyrenees
      The Pyrenees is a range of mountains in southwest Europe that forms a natural border between France and Spain...

    • Spain
    • Portugal

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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