Alvinia
Encyclopedia
Alvinia is a genus
of minute sea snail
s with an operculum
, marine
gastropod mollusks or micromollusk
s in the family Rissoidae
.
subgenus Alvinia
subgenus Linemera
Genus
In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...
of minute sea snail
Snail
Snail is a common name applied to most of the members of the molluscan class Gastropoda that have coiled shells in the adult stage. When the word is used in its most general sense, it includes sea snails, land snails and freshwater snails. The word snail without any qualifier is however more often...
s with an operculum
Operculum (gastropod)
The operculum, meaning little lid, is a corneous or calcareous anatomical structure which exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails...
, marine
Marine (ocean)
Marine is an umbrella term. As an adjective it is usually applicable to things relating to the sea or ocean, such as marine biology, marine ecology and marine geology...
gastropod mollusks or micromollusk
Micromollusk
A micromollusk is a descriptive term for a shelled mollusk which is extremely small, even at full adult size. The word is usually, but not exclusively, applied to marine mollusks, although in addition, numerous species of land snails and freshwater mollusks also reach adult size at very small...
s in the family Rissoidae
Rissoidae
Rissoidae is a large family of very small and minute sea snails with an operculum, marine gastropod mollusks in the clade Littorinimorpha.-Distribution and habitat:...
.
Species
Species in the genus Alvinia include:subgenus Alvinia
subgenus Linemera
- Alvinia gallinaceaAlvinia gallinaceaAlvinia gallinacea is a species of minute sea snail with an operculum, a marine gastropod mollusk or micromollusk in the family Rissoidae.- Original description :...
- Alvinia gradatoidesAlvinia gradatoidesAlvinia gallinacea is a species of minute sea snail with an operculum, a marine gastropod mollusk in the family Rissoidae.- Original description :...