Alvania critica
From Wikipedia, the free encyclopedia
| Alvania critica | |
|---|---|
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Superfamily: | Rissooidea |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | †A. critica |
| Binomial name | |
| †Alvania critica O. Boettger, 1907 | |
| Synonyms | |
|
† Alvania helenae var. critica O. Boettger, 1907 (basionym) | |
Alvania critica is an extinct species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.[1]
The length of the shell attains 2.5 mm, its diameter 1.5 mm.
