Amnicola walkeri
| Canadian duskysnail | |
|---|---|
| Scientific classification | |
| Kingdom: | Animalia
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| Phylum: | |
| Class: | |
| (unranked): | |
| Superfamily: | |
| Family: | |
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| Genus: | |
| Species: | A. walkeri
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| Binomial name | |
| Amnicola walkeri | |
Amnicola walkeri, common name Canadian duskysnail, is a species of freshwater snail, an aquatic gastropod mollusk in the family Amnicolidae.
The name is in honor of Mr. Bryant Walker.[1]
Shell description[]
The shell is thin, narrowly umbilicate, conic, shaped like Carpenter. The color of the shell is slightly yellowish corneous. The shell is thin, smooth, with faint growth-lines. The shell has 4 whorls that are very convex and separated by deeply constricting sutures. The last whorl is rounded below. The apex is obtuse.[1]
The aperture is oblique, rather small, mainly basal, a little longer than wide, but nearly circular. The inner margin is a trifle straightened above. The peristome is continuous, in contact with the preceding whorl for an extremely short distance above. Operculum is amnicoloid.[1]
The width of the shell is 2-2.125 mm. The height of the shell is 2.33–3 mm. The width of aperture is 1-1.125 mm. The height of aperture is 1.08-1.25 mm.[1]
Anatomy[]
Distribution[]
Type locality is Lake Michigan at , Beaver Island, at 10 meters depth.[1]
Other localities include: , Grand Rapids, Michigan; River Rouge, Wayne County, Michigan.[1]
References[]
This article incorporates public domain text from reference.[1]
- Amnicola
- Gastropods described in 1898