Turbo petholatus
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Turbo petholatus is a species of sea snail, marine gastropod mollusk in the family Turbinidae.
Turbo petholatus Voavah
Green form
Brown form
Drawing of a shell of Turbo petholatus
Operculum (gastropod)
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An operculum is a corneous or calcareous anatomical structure like a trapdoor that exists in many groups of sea snails and freshwater snails, and also in a few groups of land snails, including the Hel
Turbo petholatus
…tinged with greenish-yellow. The pattern on the shell is very similar to Turbo moolenbeeki, especially in the brown form Turbo petholathus. The circular operculum contains four whorls and a nucleus placed one-third the distance across the face. The outer surface is convex, shining, bright green on the center, the…
Shell of marine snail Lunella torquata with the calcareous operculum in place
Gastropod shell of the freshwater snail Viviparus contectus with corneous operculum in place
Penion sulcatus near Goat Island, New Zealand, with a damaged operculum
Freshwater snail Bithynia tentaculata, showing how the back of the shell rests on the round operculum on top of the foot as the snail moves along