Admete sadko Gorbunov 1946

• Main Author: Nekhaev, Ivan O.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2018
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Neogastropoda; Cancellariidae; Admete; Admete sadko; Kara Sea; Laptev Sea; Sadko; laptev
• Online Access: https://zenodo.org/record/5991695; https://doi.org/10.5281/zenodo.5991695

Admete sadko Gorbunov, 1946 Admete sadko Gorbunov 1946b: 310, 319, Plate I, fig 5. Type material: 1 syntype (empty shell), Laptev Sea, 76°12.9’N, 133°50’E, 47 m, R/ V Sadko, 21.08.1937, sta. 21, gray silt with sand (Fig. 1), ZIN 1 /61903. Gorbunov (1946b) also reported one more sample with two syntypes. The sample, however, has not been found during careful examination of ZIN collection and is apparently lost. Type locality: Laptev Sea, 76°12.9’N, 33°50’E, 47 m and 75°22’N, 135°00’E, 40 m. Other material: 1 living specimen and 1 empty shell, Kara Sea, 75°45’N, 86°05’E, 29 m, R/V Sadko, 20.08.1936, sta. 3, silt, ZIN 3/ 53455; 1 living specimen, Laptev Sea, 76°09’N, 120°00’E, 64 m, R/ V Sadko, 7.10.1937, sta. 77, ZIN 2 / 62429. Redescription. Shell of medium size for genus (Table 1), fusiform, fragile (Fig. 1, 2 A–B). Periostracum not marked. Whorls shouldered divided by deep suture. Spiral sculpture consists of prominent cords separarted by spaces of relatively equal size. Body whorl has up to 10 cords: 2—on shoulder of whorl 3–4 on periphery and 2–4 lesser developed cords on base of shell. Surface of cords often covered with secondary spiral riblets. Usually shoulder cords have weak wavy protrusions. Axial sculpture consists only of approximately straight growthlines. Early whorls eroded on all specimens, protoconch unknown. Aperture broad oval, large, its height is about 0.5 of total shell height. Siphonal canal short, slightly bended to the left. Outer lip rounded, corrugated reflecting spiral sculpture. Usually 2 weak collumelar folds present. Umbilicus closed. Operculum absent. AH—aperture height, AW—aperture width, LWH—last whorl height, PWH—penultimate whorl height, PWW—penultimate whorl width, SH—shell height, SW—shell width. Soft parts unknown (studied material contains only subadult living specimens). According to Gorbunov (1946b), radula in Admete sadko is absent. Distribution. Admete sadko is known from the Laptev and the Kara seas. Reports of the species from the Northern Atlantic (Petit & ...