Turritella annulata is a species of sea snail, a marine gastropod mollusk in the family Turritellidae.
Description The height of the shell is 30-70 mm with a turret-shaped, conical outline. The teleoconch has approximately 18-20 whorls.Reeve, Lowell Augustus, Brooks, Vincent, Reeve, Frederic, Sowerby, G. B., Sowerby, G. B., Taylor, John Edward, Reeve, Benham, and Reeve., Savill, Edwards and Co., Spottiswoode & Co., & Vincent Brooks, Day & Son,. (1843). Conchologia iconica, or, Illustrations of the shells of molluscous animals (Vol. 5). Reeve, Brothers. https://www.biodiversitylibrary.org/page/8967297 The convex whorls have spiral striations and annular varices that may appear beaded (the latter for which the species is named, annulata). The spiral striations consist of two prominent keels separated by an indented interval. The shell's color is tawny to yellow with brown axial bands. The aperture is rounded and has a corneous operculum.
Distribution and habitat T. annulata is a marine benthic species found in the western Atlantic Ocean from the coasts of Dakar, Sengal to southern Angola.Société belge de malacologie. (2000). Novapex : trimestriel de la Société belge de malacologie (Vol. 11, p. 19). La Société. https://www.biodiversitylibrary.org/page/42367703 Turritellidae species prefer sandy, muddy bottoms. Specimens are found between 20 and 60 meters below the surface.
Life Habits
Diet Species in Turritellidae are suspension feeders that primarily consume plankton, detritus, and other organic matter that is suspended in the water the gastropods inhabit.
Reproduction Turritellidae species reproduce sexually and are likely gonochoric.
Locomotion T. annulata moves by mucus mediated gliding.
References
External links Kiener, L.C. (1838). Spécies général et iconographie des coquilles vivantes. Vol. 10. Famille des Turbinacées. Genre Turritelle (Turritella, Lam.), pp. 1–46, pl. 1–14 [pp. 1–46 (1844), pl. 1–3, 5, 7–14 (1843), 4, 6 (1844)]; Scalaire (Scalaria, Lam.), pp. 1–22, pl. 1–7 [all (1838)]; Cadran (Solarium, Lam.), pp. 1–12, pl. 1–4 [all (1838)]; Roulette (Rotella, Lam.), pp. 1–10, pl. 1–3 [all (1838)]; Dauphinule (Dephinula, Lam.), pp. 1–12, pl. 1–4 [pp. 1–10 (1838), 11–12 (1842); pl. 1 (1837), 2–4 (1838]; Phasianelle (Phasianella, Lam.), pp. 1–11, pl. 1–5 [pp. 1–11 (1850); pl. 1–3, 5 (1847), 4 (1848)]; Famille des Plicacées de Lamarck, et des Trochoides de Cuvier. Genre Tornatelle (Tornatella, Lamarck), pp. 3–6, pl. 1 [all (1834)]; Genre Pyramidelle (Pyramidella), Lamarck, pp. 1–8, pl. 1–2 [all (1835)]; [Famille des Myacées.] Genre Thracie (Thracia, Leach), pp. 1–7, pl. 1–2 [all (1834)]. Reeve, L.A. (1849). Monograph of the genus Turritella. In: Conchologia Iconica. vol. 5, pl. 1–11 and unpaginated text. L. Reeve & Co., London. mith, E.A. (1872) A list of species of shells from West Africa, with descriptions of those hitherto undescribed. Proceedings of the Zoological Society of London, 1871, 727–739, pl. 75