| Alvania discors | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Rissoidae |
| Genus: | Alvania |
| Species: | A. discors |
| Binomial name | |
| Alvania discors (Allan, 1818) | |
| Synonyms [1] | |
| |
Alvania discors is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae. [1]
The length of the shell varies between 4 mm and 5 mm.
(Original description) The shell is pointed and strong. It contains five longitudinal and transverse striae. Inside it is ribbed. The outer lip is thickened. The body is longer than the spire. [2]
(Description as Rissoa montagui) The shell is imperforate and, thick. It is spirally lirate, longitudinally strongly ribbed. It is whitish, yellowish or has a chestnut color, plain or with one or two bands. The shell contains five whorls. The suture is distinct and subchanneled. The aperture is white-lipped and sulcate within, with a white varix externally. [3]
This marine species has a wide distribution. It is found in the following locations:
Fossils have been found in Pleistocene strata near Santa Flavia, Sicily and near Monastir, Tunisia; also in Pliocene strata near Siena, Italy.
Mangelia unifasciata is a species of sea snail, a marine gastropod mollusk in the family Mangeliidae.
Tritia incrassata, common name the thick-lipped dogwhelk, is a species of small sea snail, a marine gastropod mollusk in the family Nassariidae, the Nassa mud snails or dog whelks.
Tricolia speciosa, common name the Mediterranean pheasant, is a species of sea snail, a marine gastropod mollusk in the family Phasianellidae.
Emarginula sicula is a species of sea snail, a marine gastropod mollusk in the family Fissurellidae, the keyhole limpets.
Trophonopsis muricata is a species of sea snail, a marine gastropod mollusk in the family Muricidae, the murex snails or rock snails.
Alvania carinata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania cimex is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania cimicoides is a species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania dictyophora is a species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania lanciae is a species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania lineata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania mamillata is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania punctura is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania subsoluta is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania testae is a species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Alvania zetlandica is a species of minute sea snail, a marine gastropod mollusk or micromollusk in the family Rissoidae.
Alvania beanii is a species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
Pusia ebenus, common names brown mitre, ivory mitre, is a species of sea snail, a marine gastropod mollusk, in the family Costellariidae, the ribbed miters.
Pusia tricolor is a species of sea snail, a marine gastropod mollusk, in the family Costellariidae, the ribbed miters.
Alvania barreti is an extinct species of minute sea snail, a marine gastropod mollusc or micromollusk in the family Rissoidae.
