Alvania nonsculpta
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| Alvania nonsculpta | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | A. nonsculpta |
| Binomial name | |
| Alvania nonsculpta Hoenselaar & Goud, 1998 | |
Alvania nonsculpta is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae. Its name is derived from the fact that it has a near complete lack of sculpture.[1]
The length of the shell varies between 2.2 mm and 3 mm. The shell is conical and pear-shaped with an angulated protoconch. The teleconch has about 3 convex whorls, quickly increasing in width. Spiral ridges and axial ribs begin to appear at the boundary of the protoconch and teleconch, forming a square-like pattern. The axial ribs slowly fade on the first teleconch line as growth lines become more apparent.[1]