Cirsonella carinata, common name the ridged false-top-shell, is a species of minute sea snail, a marine gastropod mollusk in the family Skeneidae.[1]
The height of the shell attains 1.7 mm, its diameter 1.8 mm. The minute, smooth and glossy, cream-colored shell has a turbinate shape. The four whorls have an impressed suture. The body whorl is bluntly keeled at the periphery. There is a sculpture of dense spiral microscopic striae. The base of the shell is rounded. The umbilicus is narrow and deep, and it is surrounded by a callus funicle which expands anteriorly to join the simple lip in an angular lobe. The aperture is subcircular.[2]
This marine species occurs off New South Wales, South Australia, Tasmania, Victoria, Australia, at depths between 73 m and 200 m.
Cirsonella carinata, common name the ridged false-top-shell, is a species of minute sea snail, a marine gastropod mollusk in the family Skeneidae.
