Brookula exquisita Clarke 1961

• Main Authors: Schwabe, Enrico, Engl, Winfried
• Format: Other/Unknown Material
• Language: unknown
• Published: 2008
• Subjects: Biodiversity; Taxonomy; Animalia; Mollusca; Gastropoda; Seguenziida; Brookula; Brookula exquisita; Weddell Sea; Drake Passage; Sandwich Islands; South Sandwich Islands; Weddell; Antarc*; Antarctica; Arctic
• Online Access: https://zenodo.org/record/5631749; https://doi.org/10.5281/zenodo.5631749

Brookula exquisita Clarke, 1961 (Figs 3 –4) Brookula (Benthobrookula) exquisita Clarke 1961: 356 –357, pl. 3, fig. 8, pl. 4, fig. 2. Holotype (MCZ: 225964), not examined, SEM images available in Absalão et al. (2001) and Zelaya et al. (2006). Type locality: Antarctica, South Georgia (55 ° 29 ’S 37 ° 57 ’W), 3758 m. OD. Material examined: Four specimens (ZSM Mol 20070892­20070894), Antarctica, South Sandwich Islands, St. PS 61 / 140 –08 (58 ° 15.98 ’S 24 ° 53.72 ’W to 58 ° 16.13 ’S 24 ° 53.87 ’W), 2947–2970 m, leg. Michael Schrödl, March 22 2002, ANT XIX/ 4 (ANDEEP II) expedition. One specimen fixed and preserved in 75 % ethanol (ZSM Mol 20070892); remainder dry shells only including SEM­mounted specimen (ZSM Mol 20070894). One specimen (ZSM Mol 20021582), Antarctica, South Sandwich Islands, St. PS 61 / 140 –07 (58 °16.00’S 24 ° 53.78 ’W to 58 ° 16.39 ’S 24 ° 54.85 ’W), 2941–2945 m, leg. Michael Schrödl, March 21 2002, ANT XIX/ 4 (ANDEEP II) expedition, fixed and preserved in 96 % ethanol. One dry specimen (ZSM Mol 20070901), Antarctica, Northwest Weddell Sea, St. PS 61 / 131 –03 (65 ° 19.19 ’S 51 ° 32.54 ’W to 65 ° 19.99 ’S 51 ° 31.23 ’W), 3050–3055 m, leg. Michael Schrödl, March 5 2002, ANT XIX/ 4 (ANDEEP II) expedition. Five specimens (ZSM Mol 20021216; 20021170), Antarctica, Drake Passage, St. PS 61 / 041–03 (59 ° 22.24 ’S 60 °04.06’W to 59 ° 22.55 ’S 60 °04.01’W), 2359–2375 m, leg. Katrin Linse, January 26–27 2002, ANT XIX/ 3 (ANDEEP I) expedition, fixed and preserved in 96 % ethanol. Description of a specimen examined by SEM (ZSM Mol 20070894) Shell minute, 1.11 mm long, 1.67 mm wide (Fig. 3 A), SL/SW ratio 0.66, depressed, fragile, white in color, with roundly inflated whorls, clearly expanded laterally, low spired, spire angle 126 °. Protoconch (Fig. 3 D) of one whorl, 320 µm in diameter, 116 µm long, globose, sculptured with fine anastomosing threads, forming reticulate pattern. Teleoconch (Figs 3 A, C) of up to 1.75 whorls with convex profile. Whorls connected only for a short distance, more or less at ...