Skenea californica

Skenea californica
	Original drawing with three views of a shell of Skenea californica
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Clade:	Vetigastropoda
Order:	Trochida
Superfamily:	Trochoidea
Family:	Skeneidae
Genus:	Skenea
Species:	S. californica
Binomial name
	Skenea californica; (Bartsch, 1907)
Synonyms[1]
	Cyclostremella californica Bartsch, 1907;

Skenea californica, common name the California skenea, is a species of sea snail, a marine gastropod mollusk in the family Skeneidae.[1][2]

Description

(Original description by Paul Bartsch) The height of the shell attains 0.8 mm, its diameter 2.3 mm. The small, semitransparent shell has a planorboid shape. It is closely, spirally striated. The 3½ smooth, shining whorls are moderately rounded. The succeeding turns increase regularly in size, rendering the apex considerably lower than any of the succeeding turns. The last is the most elevated. The whorls are well rounded and separated by strongly impressed sutures and marked by many equally strong and equally spaced, somewhat wavy, incised spiral lines and fine incremental lines. At more or less regular intervals there appear slight constrictions which coincide with the lines of growth. The periphery of the body whorl is well rounded. The base of the shell is well rounded, very broadly and openly umbilicate to the very apex, marked like the upper surface. The suboval aperture is oblique. The outer lip is thin. The short columella forms an almost straight line with the faint callus of the parietal wall.[3]

Distribution

This species occurs in the Pacific Ocean off California, USA.

gollark: That seems very poetic but also probably wrong.

gollark: Motor control stuff probably spends lots of effort on modelling friction and gravity and kinematics and muscle output and whatever, but I don't believe that's plugged into "general intelligence" functions like social interaction is.

gollark: I think it's relevant, though.

gollark: Not particularly.

gollark: They're more complicated and probably interact with you more.

References

Rosenberg, G. (2012). Skenea californica (Bartsch, 1907). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=593055 on 2012-09-01
Abbott R. T. (1974). American Seashells. The marine mollusca of the Atlantic and Pacific coast of North America. II edit. Van Nostrand, New York 663 p. + 24 pl:
P. Bartsch (1907), New mollusks of the family Vitrinellidae from the west coast of America; Proceedings of the United States National Museum; v. 32 1907 (described as Cyclostremella californica)

External links

To World Register of Marine Species

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[WoRMS-1] Rosenberg, G. (2012). Skenea californica (Bartsch, 1907). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=593055 on 2012-09-01

[2] Abbott R. T. (1974). American Seashells. The marine mollusca of the Atlantic and Pacific coast of North America. II edit. Van Nostrand, New York 663 p. + 24 pl:

[3] P. Bartsch (1907), New mollusks of the family Vitrinellidae from the west coast of America; Proceedings of the United States National Museum; v. 32 1907 (described as Cyclostremella californica)