Odostomia altina
From Wikipedia, the free encyclopedia
| Odostomia altina | |
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| Apertural view of a shell of Odostomia altina | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Mollusca |
| Class: | Gastropoda |
| Family: | Pyramidellidae |
| Genus: | Odostomia |
| Species: | O. altina |
| Binomial name | |
| Odostomia altina | |
| Synonyms | |
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Odostomia altina is a species of sea snail, a marine gastropod mollusc in the family Pyramidellidae, the pyrams and their allies.[1][2]
The ovate shell is white. Its length measures 3 mm. The whorls of the protoconch are deeply obliquely immersed in the first of the succeeding turns, above which only the tilted edge of the last volution projects. The five whorls of the teleoconch are well rounded, feebly contracted at the suture and appressed at the summit. The suture is slightly impressed. The periphery is obscurely angulated. The base of the shell is well rounded. The entire surface is marked by slightly retractive lines of growth and exceedingly fine spiral striations. The aperture is ovate. The posterior angle is acute. The outer lip is thin. The columella is strongly curved, decidedly revolute and provided with a strong fold at its insertion.[3]