*** Welcome to piglix ***

Punctum pygmaeum

Punctum pygmaeum
Punctum pygmaeum shell.jpg
An apical view of a shell of Punctum pygmaeum
Punctum pygmaeum shell 2.jpg
A basal view of a shell of Punctum pygmaeum
Scientific classification
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
(unranked): clade Heterobranchia
clade Euthyneura
clade Panpulmonata
clade Eupulmonata
clade Stylommatophora
Superfamily: Punctoidea
Family: Punctidae
Genus: Punctum
Species: P. pygmaeum
Binomial name
Punctum pygmaeum
(Draparnaud, 1801)
Synonyms

Helix pygmæa Draparnaud, 1801


Helix pygmæa Draparnaud, 1801

Punctum pygmaeum is a species of very small, air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Punctidae, the dot snails.

For terms see gastropod shell The shell is very small, 1.2-1.6 mm in width.

The 0.6-0.8 x 1.2-1.6 mm. shell is almost flat, extremely densely and regularly striated, appearing silky shiny light horny brown. There are 3-3.5 moderately convex whorls, the aperture is rounded, with a thin margin which is not reflected and without a lip.The umbilicus is wide (25 % of shell diameter).

This species occurs in countries and islands including:



...
Wikipedia

...