Tridentifera

*Tridentifera* is a genus of small, freshwater snails in the family Truncatellidae, belonging to the clade Caenogastropoda. These snails are characterized by their distinctive, often triangular or trident-shaped shells, which give the genus its name. The genus is primarily found in freshwater habitats across Europe, particularly in regions such as the Iberian Peninsula, France, and parts of Central Europe.

Members of *Tridentifera* typically exhibit dextral (right-handed) coiling in their shells, which are usually small, ranging from 2 to 5 millimeters in diameter. The shell surface may be smooth or slightly ribbed, and the coloration varies among species, often appearing in shades of brown, yellow, or white. Some species display subtle patterns or markings, though these are generally subtle.

The taxonomy of *Tridentifera* has been the subject of some debate, with certain species previously classified under other genera such as *Truncatella* or *Pseudotrichia*. Molecular and morphological studies have since clarified their distinctiveness, leading to their recognition as a separate genus. As of current classifications, the genus includes several species, such as *Tridentifera carpathica*, *Tridentifera cernua*, and *Tridentifera tridentata*, among others.

These snails are often found in moist, shaded environments, including streams, ponds, and damp terrestrial habitats. They play a role in their ecosystems as detritivores, feeding on organic matter and contributing to nutrient cycling. Due to their small size and specialized habitats, *Tridentifera* species are not typically of economic importance but are of interest to malacologists (snail specialists) and ecologists studying freshwater biodiversity.

Conservation status varies among species, with some populations facing threats from habitat degradation, pollution, and climate change. However, many species remain widespread and are not currently listed as endangered. Further research is ongoing to better understand their distribution, ecology, and conservation needs.