Turris dickersoni is an extinct species of sea snail, a marine gastropod mollusk in the family Turridae, the turrids.[1]

Turris dickersoni
Shell of Turris dickersoni (holotype)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Mollusca
Class: Gastropoda
Subclass: Caenogastropoda
Order: Neogastropoda
Superfamily: Conoidea
Family: Turridae
Genus: Turris
Species:
T. dickersoni
Binomial name
Turris dickersoni
C.E. Weaver 1916
Synonyms
  • Parasyrinx dickersoni C.E. Weaver, 1916
  • Spirotropis dickersoni C.E. Weaver, 1916

Description

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(Original description) The shell is small and elongate. It contains 10 angular whorls. The spire is elevated and conical. The upper surface of the whorls is concave and ornamented by very faintly developed revolving ribs. A prominent keel is developed upon the angulated portion of each whorl and this is sculptured by three rounded ribs with interspaces of equal width. About thirty similar ribs are present on the lower surface of the body whorl. The longitudinal sculpture is represented by moderately developed lines of growth which conform to the posterior sinus. The aperture is subpyriform. The outer lip is thin. The inner lip is callused with a noticeable groove separating the callus from the ornamented portion of the whorl. The siphonal canal is of moderate length, deeply channeled and nearly straight.[1]

Distribution

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Fossils of this marine species were found in Oligocene strata in Washington, USA

References

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