Stacked from 42 images. Method=B (R=8,S=4)
Stacked from 27 images. Method=B (R=8,S=4)
Species ID
OC-SP-0002575
Discovered
Phylum
Mollusca
Species ID
OC-SP-0002575
Provisional Species Name
Retizafra sp_MNHN_IM_2000_40345
Lowest Valid Taxon Name in WoRMS
Retizafra
Lowest Known Rank
Genus
Status
Discovered
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Embargo
No
Kingdom
Animalia
Phylum
Mollusca
Class
Gastropoda
Order
Neogastropoda
Family
Columbellidae
Genus
Retizafra
Taxonomic Remarks
This species is closest to R. zingiber Monsecour & Monsecour, 2016. It differs by its much less rounded whorls, its much higher number of axial ribs and different form of aperture.
Received All Minimal Data for Discovery
01/04/2026
Description of Material
Shell of average size for the genus, adult size up to 3.7 mm; fusifom with weakly rounded whorls. Suture slightly impressed. Protoconch paucispiral, consisting of about 1.5 smooth whorls. Transition to teleoconch clearly visible. Teleoconch consisting of about 3.2 whorls. Axial sculpture of strong axial ribs on all whorls. About 17 ribs on the first teleoconch whorl to 18-19 ribs on the lower whorls. The last axial rib close to the aperture is much stronger sloping to the edge of the aperture. Spiral sculpture absent in the beginning of the first whorl, very weak near the end of this whorl and becoming clearly visible on the second whorl. This spiral sculpture exists of strong rather flat cords with rather narrow interspaces. which overrun the axial ribs. On the second whorl 7 of these ribs are present. On the last whorl there are 14 of these cords, going over in the basal cords. Subsutural cord stronger than the other cords. Basal cords ventrally ranging to just below the adapical end of the columella. Aperture average width for the genus, about 45% of shell height. Outside of outer lip thick, with continuation of the spiral scuplture. Inside of outer lip with a sinus on the adapical end and 5 strong denticles. Columellar callus thick, with a ridge of merged denticles. Parietal callus clearmy present. Siphonal canal short, open, slightly recurved. Shell color uniform cream. The inside of the aperture white. Columella white, with the ridge weak brown. Parietal callus white. Protoconch brown. Height of holotype: 3.7 mm
Ecology
Direct developing species with paucispiral protoconch, so non planctotrophic larvae. Most likely endemic.
Distribution
SPANBIOS expedition MNHN: stn DW5167, 18°41,2’S, 163°15,9’E, 568-575m, 1 dd; stn DW5176, 18°52,5’S, 163°20,1’E, 498-526m, 2 dd (incl holotype).
Scientific Name Authorship
Monsecour, Kevin
Stacked from 42 images. Method=B (R=8,S=4)
Stacked from 27 images. Method=B (R=8,S=4)
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