|Shells of Diodora italica.|
|Fossil shell of Diodora italica from Pliocene of Italy|
The fossil records of this species dates back to the Miocene (age range: from 23.03 to 0.012 million years ago). These fossils have been found in Italy, Spain, Cyprus, Greece, Moldova and Slovakia.
The shells of Diodora italica can reach a length of about 56 millimetres (2.2 in) and a width of about 25 millimetres (0.98 in). The basic color is whitish or grayish with small radial ribs and sometimes with 8-10 dark gray or brownish bands radiating from the centre.
Water for respiration and excretion is drawn in under the edge of the shell and exits through the "keyhole" at or near the apex. Like all other fissurellids, these sea snails are herbivores, and use the radula to scrape algae from rocks.
Distribution and habitat
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