Species ID
OC-SP-0003294
Discovered
Phylum
Mollusca
Species ID
OC-SP-0003294
Provisional Species Name
Pyramidellidae_FKt250812-850-BB2-A
Lowest Valid Taxon Name in WoRMS
Odostomia
Lowest Known Rank
Genus
Status
Discovered
Does the taxonomist(s) intend to work on this material further?
3. I/We are not sure yet. This is of course no problem, we will display your species info (if not embargoed) while you work out your species description plan.
Embargo
No
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Family
Pyramidellidae
Genus
Odostomia
Date Identified
15/11/2025
Taxonomic Remarks
This species is assigned to the superfamily Pyramidelloidea based on the elongate-conical shell, smooth teleoconch, and heterostrophic protoconch typical of pyramidellid gastropods. The shell differs from other known regional congeners by its relatively large size, inflated last whorl, and short conical spire with weakly defined sutures. The teleoconch surface is mostly smooth with faint growth lines, and the body whorl is proportionally expanded compared to related taxa. This combination of characters suggests that the specimen represents a distinct taxon within Pyramidelloidea, although examination of the protoconch orientation and internal morphology would be required for a precise generic placement.
Received All Minimal Data for Discovery
10/04/2026
Description of Material
Small gastropod with elongate-conical shell and relatively short spire. Shell thin, translucent to pale yellowish, with smooth teleoconch sculpture consisting mainly of fine growth lines. The body whorl is inflated and represents most of the shell volume, while the spire is short and tapering. The aperture is oval and relatively large. The soft body is translucent white to pale cream, with elongated cephalic tentacles visible in living specimens.
Ecology
Several living specimens were observed associated with siboglinid tubeworms (Lamellibrachia sp.) in a chemosynthetic habitat. The species occurs on soft sediments surrounding tubeworm aggregations at depths around 245 m, under environmental conditions of approximately 10.7 °C and 34.9 PSU salinity.
Distribution
Currently known from a deep-sea locality in the southwestern Atlantic Ocean at approximately 35.0449° S, 52.2741° W, at a depth of about 245–256 m.
Join the census
The Ocean Census Alliance unites national and philanthropic marine institutes, museums, and universities, backed by governments, philanthropy, business and civil society partners.
