Stacked from 27 images. Method=B (R=8,S=4)
Stacked from 24 images. Method=B (R=8,S=4)
Species ID
OC-SP-0002557
Discovered
Phylum
Mollusca
Species ID
OC-SP-0002557
Provisional Species Name
Anachis sp_MNHN_IM_2000_40373
Lowest Valid Taxon Name in WoRMS
Anachis
Lowest Known Rank
Genus
Status
Discovered
Does the taxonomist(s) intend to work on this material further?
2. I/We already have plans to publish. (For marine invertebrates please know that SOSA could support you in this too - please click the button for more details).
Embargo
No
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Neogastropoda
Family
Columbellidae
Genus
Anachis
Taxonomic Remarks
his species differs from A. pinguis by its more elegant shell, more shouldered whorls, higher number of teleoconch whorls, different form of axial ribs and narrower aperture. It differs from A. sp 15 by its bigger, more slender shell, higher number of teleoconch whorls and much clearer basal cords. It differs from A. sp16 by its more elegant shell, lower number of protoconch whorls, presence of a subsutural cord, more clear basal cords and different denticulation on the inside of the outer lip.
Received All Minimal Data for Discovery
01/04/2026
Description of Material
Shell of very small size for the genus, adult size up to 2.7 mm; fusifom, elongate. Slightly translucent. Slightly rounded whorls. Suture slightly impressed. Protoconch paucispiral, consisting of about 1.2 smooth whorls. Transition to teleoconch clearly visible. Teleoconch consisting of about 3.1 whorls. Axial sculpture on all whorls, consisting of axial ribs with rather narrow interspaces. There are 15 ribs on the first teleoconch whorl, 14-16 on the next teleoconch whorls. Last axial ribs close to the aperture much weaker, alomst obsolete. Spiral sculpture absent apart from the basal cords consisting of one narrow subsutural cord. Basal cords clearly present and reaching to the adapical end of the columella. Aperture rather narrow for the genus, about 47% of shell height. Outside of outer lip with the continuation of the basal cords on the abapical end. Inside of outer lip with a weak sinus and with 2 denticles just below the sinus. Columellar callus clearly present, slightly raised, smooth. Parietal callus clearly present. Siphonal canal short, open, slightly recurved. First teleoconch whorls beige, later teleoconch whorls off-white. Aperture and columella white. Protoconch beige. Height of holotype: 2.6 mm
Ecology
Direct developing species with paucispiral protoconch, so non planctotrophic larvae. Most likely endemic.
Distribution
SPANBIOS expedition MNHN: stn DW5175, 18°55,1’S, 163°20,9’E, 408-441m, 2 lv (holotype), 8 dd; stn DW5244, 17°59,3’S, 162°59,8’E, 723-727m, 1 dd.
Scientific Name Authorship
Monsecour, Kevin
Stacked from 27 images. Method=B (R=8,S=4)
Stacked from 24 images. Method=B (R=8,S=4)
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.
