Original taxon: Vermicularia granulata, described after a Serpula granulata by Otto Fabricius in his Fauna Groenlandica Copenhagen 1780, which poses a problem since this animal is considered to live only in Mediterranean. Many synonyms and descriptions, among which is that given by the marquess of Monterosato: « Shell solitary, affixed from the ventral part, lying; nucleiform or discoid in the first whorl, then irregularly coiled; the anterior part cylindrical and erect. Sculpture grainy with 3-4 decurring dorsal lines, of which the central one is slightly higher than the others, with the furrows crossed by growth marks; anterior end of the tube almost smooth. Colour horny. » – T. A. di Monterosato: “Monografia dei Vermeti del Mediterraneo”, Bullettino della Società Malacologica Italiana vol.17, Pisa 1892, p.23.