|Basic info||Taxonomic history||Classification||Relationships|
|Morphology||Ecology and taphonomy||External Literature Search||Age range and collections|
Gastropoda - Sorbeoconcha - Procerithiidae
If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.
|O. Haas 1953||Shell shape slenderconical to needle-like; whorl profile first gently convex, later becoming flat and even slightly concave, owing to a swelling of the upper part of the whorl in maturity. Sutures shallowly engraved. Base separated by a rounded shoulder from the rest of the body whorl, somewhat truncate, and slightly concave. Aperture rhomboidal in shape, with an angulation at its upper end and a short and shallow anterior notch at the lower which points downward. Inner lip in its lower part somewhat reflexed over the columella which is solid and sinuous. Ornamentation dominated by a rather dense though not prominent transverse costation which persists throughout development. The ribs run from the upper suture to the lower one, or to the shoulder, respectively. In maturity they become thickened and slightly more prominent at their upper ends, thus accentuating the subsutural torus. Sometimes they tend to form faint tubercles at their lower ends also. In addition, there is generally a very fine and dense revolving striation. Nucleus strongly inclined towards the shell axis and decidedly alloiostrophic.|