Info
Emarginula fissura (Linnaeus, 1758)
Emarginula fissura is a sea slug belongs to the family Fissurellidae, the keyhole limpets. These limpets have a circular opening at the apical end of the shell, which serves both as an excurrent and anal opening.
Shell up to 15 mm long, with oval contour and raised, conical profile, tip located in the posterior third, never protruding beyond the posterior edge. Sculpture of numerous low radial ribs, alternately stronger and weaker, crossed by comarginal cords weakened at the top of the ribs. Slot narrow and deep. Color white.
Occurs from near the coast to approx. 150 m in the northern part of the distribution area, in the south mostly at depths of over 100 m. Maximum recorded depth 335 m.
WoRMS gives “Feeding type predator > on sessile prey” for the small snail = predatory, eats sessile organisms. More precise information about what the small snail feeds on is not known.
Synonymised names
Emarginula conica Lamarck, 1801 · unaccepted (synonym)
Emarginula conica Schumacher, 1817 · unaccepted (synonym)
Emarginula elata Libassi, 1859 · unaccepted
Emarginula elata Michaud, 1877 † · unaccepted > junior subjective synonym
Emarginula emendata G. B. Sowerby II, 1863 · unaccepted (synonym)
Emarginula fissura var. elata Jeffreys, 1865 · unaccepted (synonym)
Emarginula fissura var. incurva Jeffreys, 1865 · unaccepted (synonym)
Emarginula fissura var. subdepressa Jeffreys, 1865 · unaccepted (synonym)
Emarginula giraudi Michaud, 1877 † · unaccepted > junior subjective synonym
Emarginula intervecta Locard, 1898 · unaccepted
Emarginula laevis Récluz, 1843 · unaccepted (synonym)
Emarginula muelleri Forbes & Hanley, 1849 · unaccepted (synonym)
Emarginula reticulata J. Sowerby, 1813 · unaccepted (junior synonym)
Emarginula tenuis Récluz, 1843 · unaccepted (dubious synonym)
Patella fissura Linnaeus, 1758 · unaccepted
Semperia emendata (G. B. Sowerby II, 1863) · unaccepted
Direct children (3)
Variety Emarginula fissura var. elata Jeffreys, 1865 accepted as Emarginula fissura (Linnaeus, 1758) (synonym)
Variety Emarginula fissura var. incurva Jeffreys, 1865 accepted as Emarginula fissura (Linnaeus, 1758) (synonym)
Variety Emarginula fissura var. subdepressa Jeffreys, 1865 accepted as Emarginula fissura (Linnaeus, 1758) (synonym)
Emarginula fissura is a sea slug belongs to the family Fissurellidae, the keyhole limpets. These limpets have a circular opening at the apical end of the shell, which serves both as an excurrent and anal opening.
Shell up to 15 mm long, with oval contour and raised, conical profile, tip located in the posterior third, never protruding beyond the posterior edge. Sculpture of numerous low radial ribs, alternately stronger and weaker, crossed by comarginal cords weakened at the top of the ribs. Slot narrow and deep. Color white.
Occurs from near the coast to approx. 150 m in the northern part of the distribution area, in the south mostly at depths of over 100 m. Maximum recorded depth 335 m.
WoRMS gives “Feeding type predator > on sessile prey” for the small snail = predatory, eats sessile organisms. More precise information about what the small snail feeds on is not known.
Synonymised names
Emarginula conica Lamarck, 1801 · unaccepted (synonym)
Emarginula conica Schumacher, 1817 · unaccepted (synonym)
Emarginula elata Libassi, 1859 · unaccepted
Emarginula elata Michaud, 1877 † · unaccepted > junior subjective synonym
Emarginula emendata G. B. Sowerby II, 1863 · unaccepted (synonym)
Emarginula fissura var. elata Jeffreys, 1865 · unaccepted (synonym)
Emarginula fissura var. incurva Jeffreys, 1865 · unaccepted (synonym)
Emarginula fissura var. subdepressa Jeffreys, 1865 · unaccepted (synonym)
Emarginula giraudi Michaud, 1877 † · unaccepted > junior subjective synonym
Emarginula intervecta Locard, 1898 · unaccepted
Emarginula laevis Récluz, 1843 · unaccepted (synonym)
Emarginula muelleri Forbes & Hanley, 1849 · unaccepted (synonym)
Emarginula reticulata J. Sowerby, 1813 · unaccepted (junior synonym)
Emarginula tenuis Récluz, 1843 · unaccepted (dubious synonym)
Patella fissura Linnaeus, 1758 · unaccepted
Semperia emendata (G. B. Sowerby II, 1863) · unaccepted
Direct children (3)
Variety Emarginula fissura var. elata Jeffreys, 1865 accepted as Emarginula fissura (Linnaeus, 1758) (synonym)
Variety Emarginula fissura var. incurva Jeffreys, 1865 accepted as Emarginula fissura (Linnaeus, 1758) (synonym)
Variety Emarginula fissura var. subdepressa Jeffreys, 1865 accepted as Emarginula fissura (Linnaeus, 1758) (synonym)
