Elonidae
Elona quimperiana
The Elonidae are a small family from the suborder of terrestrial snails ( gastropod ). It consists now of only two extant, monotypic genera that are native to northern Spain and western France. A third genus from South Eastern Europe is also provided by some authors to do so. However, quite a number of fossil representatives are added, which are known since the Eocene.
Features
The housings are strongly flattened to almost planispiral. The shell is relatively thin and translucent. The housing is 1-4 lighter radial lines, which are followed by darker radial lines. The umbilicus is open and cylindrical. The dart sac opens into the vagina, a Neophor does not exist. The two mucus glands are club-shaped and occur above the arrow sac into the vagina.
Occurrence, lifestyle and dissemination
The modern species of the family live exclusively in northern Spain, northern Portugal, the French-Spanish Western Pyrenees and Brittany. Soosia occurs in Serbia, Romania and Bulgaria. The fossil representatives are known from Central Europe.
System
The family is divided by Bouchet & Rocroi (2005) into two subfamilies. The subfamily Klikiinae it contains predominantly fossil representatives. Soosia Hesse, 1918 could be a still extant representatives of this group, but is poorly known.
- Family Elonidae Gittenberger, 1979 Subfamily Eloninae Gittenberger, 1979 Genus Elona H. Adams & A. Adams, 1855 Country Posthorn ( Elona quimperiana ( Blainville 1821) )
- Genus † Galactochilus Sandberger, 1875
- Norelona pyrenaica ( Draparnaud, 1805)
- Genus Soosia Hesse, 1918 ( position doubtful )
- Genus † Klikia Pilsbry, 1894