Cirsonella

Cirsonella is a genus of small sea snails, marine gastropod molluscs in the family Skeneidae. (Original description by G. Angas) The minute, smooth shell is globosely turbinate. It is narrowly umbilicated. The aperture is circular. The continuous peristome is slightly thickened. Species within the genus Cirsonella include: == Further reading == .....
Found on http://en.wikipedia.org/wiki/Cirsonella
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