Raphitoma columnae

Raphitoma columnae is an extinct species of sea snail, a marine gastropod mollusk in the family Raphitomidae.^[1]

Raphitoma columnae
Shell of Raphitoma columnae
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Gastropoda
Subclass:	Caenogastropoda
Order:	Neogastropoda
Superfamily:	Conoidea
Family:	Raphitomidae
Genus:	Raphitoma
Species:	R. columnae
Binomial name
Raphitoma columnae (Scacchi, 1835)
Synonyms[1]
Bela columnae Glibert, 1960 Cythara (Raphitoma) columnae Ruggieri, 1952 Daphnella (Raphitoma) columnae Cipolla, 1914 Fusus costatus Phillippi, 1836 Fusus striatellus Bivona-Bernardi, Ant. & And. Bivona-Bernardi, 1838 Pleurotoma columnae Scacchi, 1835 (original combination) Pleurotoma (Raphitoma) columnae Seguenza, 1873

Description

The length of the shell reaches 23 mm, its diameter 7 mm.

Compared with Raphitoma harpula, the shell is longer, the whorls are less convex, the suture is less impressed. The body whorl is shorter and less depressed on top. The axial ribs are hardly oblique. The transverse striae are uniform and don't form nodules when crossing the ribs. The siphonal canal is straight, shorter and hardly noticed.^[2]

Distribution

Fossils of this marine species were found in Miocene strata of Italy.