Seguenzia monocingulata | |
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Drawing with two views of a shell of Seguenzia monocingulata | |
Scientific classification ![]() | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Mollusca |
Class: | Gastropoda |
Subclass: | Vetigastropoda |
Family: | Seguenziidae |
Genus: | Seguenzia |
Species: | †S. monocingulata
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Binomial name | |
†Seguenzia monocingulata Seguenza, 1876 [1]
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Seguenzia monocingulata is an extinct species of sea snail, a marine gastropod mollusk in the family Seguenziidae.[2] It resembles Seguenzia formosa and has been regarded as a synonym of that (extant) species. However the two species are distinct, based on shell morphology.[3]
The height of the shell attains 4 mm. The white, imperforate shell has a high conoid shape. The whorls have revolving ribs, of which the last has about four distant prominent ones, besides minor striae on the base.[4]
This species was originally described by Seguenza from Pliocene fossils found at Torrente Trapani, a locality of the city of Messina, Sicily.[5] It is common in deep-sea deposits from southern Italy.[3]