Stacked from 31 images. Method=B (R=8,S=4)
Stacked from 28 images. Method=B (R=8,S=4)
Species ID
OC-SP-0002545
Discovered
Phylum
Mollusca
Species ID
OC-SP-0002545
Provisional Species Name
Anachis sp_MNHN_IM_2000_40360
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
This species belongs to the group of A. inferiodentata, A. limula and the preceding species. But it can easily be separated from these three species by its less pronounced axial ribs and the presence of weak spiral sculpture on the later teleoconch whorls.
Received All Minimal Data for Discovery
01/04/2026
Description of Material
Shell of small size for the genus, adult size up to 5.3mm; fusifom, elongate. Rounded whorls. Semi-translucent. Suture slightly impressed. Protoconch paucispiral, consisting of about 1.5-1.6 smooth whorls. Transition to teleoconch weakly visible. Teleoconch consisting of about 4.1 whorls. Axial sculpture on all whorls, consisting of axial ribs with wide interspaces. About 8-9 ribs on each whorl, the last whorl has 11 ribs. The last axial rib close to the aperture is stronger. Spiral sculpture absent on the first whorls, but becoming gradually more visible on further teleoconch whorls, first a few cords just above the suture but gradually over the whole width of the whorls. This sculpture consists of weak flat cords with narrow interspaces. The basal cords are much clearly present than the other spiral cords and reach to just below the adapical edge of the columella. Aperture rather wide, about 45% of shell height. Outside of outer lip with continuation of the spiral sculpture. Inside of outer lip without a sinus and without denticulation. Columellar callus thin, not raised, without denticulation. Parietal callus very weak. Siphonal canal short, open, slightly recurved. Teleoconch whorls, inside of aperture, columella and protoconch all semi-translucent white. Height of holotype: 4.5 mm
Ecology
Direct developing species with paucispiral protoconch, so non planctotrophic larvae. Most likely endemic.
Distribution
SPANBIOS expedition MNHN: stn DW5166, 18°40’S, 163°16’E, 556-577m, 1dd, 1 dd juv; stn DW5244, 17°59,3’S, 162°59,8’E, 723-727m, 1 dd (holotype).
Scientific Name Authorship
Monsecour, Kevin
Stacked from 31 images. Method=B (R=8,S=4)
Stacked from 28 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.
