| Fontigens aldrichi | |
|---|---|
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Subclass: | Caenogastropoda |
| Order: | Littorinimorpha |
| Family: | Fontigentidae |
| Genus: | Fontigens |
| Species: | F. aldrichi |
| Binomial name | |
| Fontigens aldrichi (Call & Beecher, 1886) | |
| Synonyms | |
| |
Fontigens aldrichi, common name the Missouri amnicola, is a species of freshwater snail, an aquatic gastropod mollusk in the family Fontigentidae. [1]
The shell is minute, imperforate, obliquely ovate, light brown. The surface of the shell is smooth except for slight growth-lines. The shell is composed of 3½ very convex whorls separated by unusually deep sutures. The apex is obtuse and often eroded. The last whorl is shortly deflexed in front in adult specimens. [2]
The aperture is rotund-ovate, being slightly narrowed above, but not angular there. The aperture is not modified in form by the preceding whorl. The aperture is moderately oblique. The peristome is continuous, not closely appressed at the upper left side. The columellar margin is thick and calloused within. [2]
The width of the shell is 1.3 mm. The height of the shell is 1.7 mm. The height of aperture is 0.8 mm. The shell of Fontigens aldrichi is much smaller than Bythinella aldrichi Call, shorter, with a thick and heavy columellar lip. [2]
Type locality is Carter County, Missouri.
Amastra subrostrata was an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra tenuispira is an extinct species of air-breathing land snail, a terrestrial pulmonate gastropod mollusk in the family Amastridae.
Amnicola is a genus of very small freshwater snails which have an operculum. Amnicola species are aquatic prosobranch gastropod mollusks in the family Amnicolidae according to the taxonomy of the Gastropoda.
Fontigens is a genus of minute freshwater snails with an operculum, aquatic gastropod molluscs or micromolluscs in the family Fontigentidae.
Pyrgophorus spinosus, common name the spiny crownsnail, is a species of very small freshwater snail with a gill and an operculum, an aquatic gastropod mollusk in the family Hydrobiidae.
Pyrgulopsis deserta is a species of freshwater snail in the family Hydrobiidae, the mud snails. It is known by the common names desert springsnail, Virgin springsnail, and St. George snail. It occurs in southwestern Utah and northwestern Arizona in the United States.
Navarriella elliptica is a species of very small aquatic snail, a spring snail, an operculate gastropod mollusc in the family Hydrobiidae.
Marstonia comalensis is a species of minute freshwater snail with a gill and an operculum, an aquatic gastropod mollusk or micromollusk in the family Hydrobiidae. It is found in south central Texas, United States.
Amastra fragilis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra borcherdingi is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra hawaiiensis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra antiqua is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra montana is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra spaldingi is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra extincta is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra fossilis is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra hutchinsonii is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra violacea is a species of air-breathing land snails, terrestrial pulmonate gastropod mollusks in the family Amastridae.
Amastra rugulosa is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
Amastra viriosa is a species of air-breathing land snail, a terrestrial pulmonate gastropod mollusc in the family Amastridae.
This article incorporates public domain text from reference. [2]
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