Biology:Odostomia notilla

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Short description: Species of gastropod

Odostomia notilla
Odostomia notilla 001.png
Apertural view of the shell of Odostomia notilla
Scientific classification edit
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Heterobranchia
Family: Pyramidellidae
Genus: Odostomia
Species:
O. notilla
Binomial name
Odostomia notilla
Dall & Bartsch, 1909
Synonyms[1]
  • Evalea notilla Dall & Bartsch, 1909
  • Odostomia (Evalea) notilla Dall & Bartsch, 1909

Odostomia nota is a species of sea snail, a marine gastropod mollusc in the family Pyramidellidae, the pyrams and their allies.[1]

Description

The yellowish-white shell is very elongate and ovate. Its length measures 2.7 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 teloconch are well rounded, feebly contracted at the sutures, narrowly subtabulately shouldered at the summit. The sutures are strongly marked. The periphery of the body whorl is marked by a low raised cord, which renders it decidedly angulated. The base of the shell is short, well rounded, somewhat pinched in at the umbilical area. The entire surface of the spire and the base is marked by almost vertical lines of growth and numerous very fine, well incised, spiral striations. The aperture is ovate. The posterior angle is acute. The outer lip is thin. The columella is slender, slightly curved and provided with a fold at its insertion. The parietal wall is covered with a thick callus.[1]

Distribution

The type specimen was found in the Pacific Ocean off Catalina Island, California .

References

External links

Wikidata ☰ Q3168657 entry